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Finding the Fourth Proportional to 521,001.50, 781,493.70 and 166,010.70

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Solution

The fourth proportional to 521,001.50, 781,493.70 and 166,010.70 is: 249,013.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,001.50 : 781,493.70 = 166,010.70 : x
  2. Step 2: Convert to fraction form
    521,001.50/781,493.70 = 166,010.70/x
  3. Step 3: Cross multiply
    521,001.50x = 781,493.70 × 166,010.70
  4. Step 4: Simplify right side
    521,001.50x = 129,736,316,182.59
  5. Step 5: Solve for x
    x = 129,736,316,182.59/521,001.50
  6. Step 6: Final answer
    x = 249,013.33

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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.