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Finding the Fourth Proportional to 521,677.92, 782,519.76 and 147,701.28

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Solution

The fourth proportional to 521,677.92, 782,519.76 and 147,701.28 is: 221,552.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,677.92 : 782,519.76 = 147,701.28 : x
  2. Step 2: Convert to fraction form
    521,677.92/782,519.76 = 147,701.28/x
  3. Step 3: Cross multiply
    521,677.92x = 782,519.76 × 147,701.28
  4. Step 4: Simplify right side
    521,677.92x = 115,579,170,177.29
  5. Step 5: Solve for x
    x = 115,579,170,177.29/521,677.92
  6. Step 6: Final answer
    x = 221,552.74

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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.