Home / 420,972.32-580,911.20-229,945.12

Finding the Fourth Proportional to 420,972.32, 580,911.20 and 229,945.12

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Solution

The fourth proportional to 420,972.32, 580,911.20 and 229,945.12 is: 317,307.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,972.32 : 580,911.20 = 229,945.12 : x
  2. Step 2: Convert to fraction form
    420,972.32/580,911.20 = 229,945.12/x
  3. Step 3: Cross multiply
    420,972.32x = 580,911.20 × 229,945.12
  4. Step 4: Simplify right side
    420,972.32x = 133,577,695,593.34
  5. Step 5: Solve for x
    x = 133,577,695,593.34/420,972.32
  6. Step 6: Final answer
    x = 317,307.55

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.