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Finding the Fourth Proportional to 487,030.60, 730,545.90 and 221,310.10

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Solution

The fourth proportional to 487,030.60, 730,545.90 and 221,310.10 is: 331,965.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,030.60 : 730,545.90 = 221,310.10 : x
  2. Step 2: Convert to fraction form
    487,030.60/730,545.90 = 221,310.10/x
  3. Step 3: Cross multiply
    487,030.60x = 730,545.90 × 221,310.10
  4. Step 4: Simplify right side
    487,030.60x = 161,677,186,183.59
  5. Step 5: Solve for x
    x = 161,677,186,183.59/487,030.60
  6. Step 6: Final answer
    x = 331,965.15

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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.