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Finding the Fourth Proportional to 300,935,496.60, 451,403,244.90 and 255,018,994.20

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Solution

The fourth proportional to 300,935,496.60, 451,403,244.90 and 255,018,994.20 is: 382,528,491.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,935,496.60 : 451,403,244.90 = 255,018,994.20 : x
  2. Step 2: Convert to fraction form
    300,935,496.60/451,403,244.90 = 255,018,994.20/x
  3. Step 3: Cross multiply
    300,935,496.60x = 451,403,244.90 × 255,018,994.20
  4. Step 4: Simplify right side
    300,935,496.60x = 115,116,401,493,014,272
  5. Step 5: Solve for x
    x = 115,116,401,493,014,272/300,935,496.60
  6. Step 6: Final answer
    x = 382,528,491.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.