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Finding the Fourth Proportional to 553,401.20, 830,101.80 and 179,424.20

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Solution

The fourth proportional to 553,401.20, 830,101.80 and 179,424.20 is: 269,136.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,401.20 : 830,101.80 = 179,424.20 : x
  2. Step 2: Convert to fraction form
    553,401.20/830,101.80 = 179,424.20/x
  3. Step 3: Cross multiply
    553,401.20x = 830,101.80 × 179,424.20
  4. Step 4: Simplify right side
    553,401.20x = 148,940,351,383.56
  5. Step 5: Solve for x
    x = 148,940,351,383.56/553,401.20
  6. Step 6: Final answer
    x = 269,136.30

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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.