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Finding the Fourth Proportional to 521,337.40, 782,006.10 and 221,742.70

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Solution

The fourth proportional to 521,337.40, 782,006.10 and 221,742.70 is: 332,614.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,337.40 : 782,006.10 = 221,742.70 : x
  2. Step 2: Convert to fraction form
    521,337.40/782,006.10 = 221,742.70/x
  3. Step 3: Cross multiply
    521,337.40x = 782,006.10 × 221,742.70
  4. Step 4: Simplify right side
    521,337.40x = 173,404,144,030.47
  5. Step 5: Solve for x
    x = 173,404,144,030.47/521,337.40
  6. Step 6: Final answer
    x = 332,614.05

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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.