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Finding the Fourth Proportional to 510,003.80, 765,005.70 and 307,050.20

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Solution

The fourth proportional to 510,003.80, 765,005.70 and 307,050.20 is: 460,575.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,003.80 : 765,005.70 = 307,050.20 : x
  2. Step 2: Convert to fraction form
    510,003.80/765,005.70 = 307,050.20/x
  3. Step 3: Cross multiply
    510,003.80x = 765,005.70 × 307,050.20
  4. Step 4: Simplify right side
    510,003.80x = 234,895,153,186.14
  5. Step 5: Solve for x
    x = 234,895,153,186.14/510,003.80
  6. Step 6: Final answer
    x = 460,575.30

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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.