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Finding the Fourth Proportional to 521,001.49, 781,493.70 and 166,010.69

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Solution

The fourth proportional to 521,001.49, 781,493.70 and 166,010.69 is: 249,013.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,001.49 : 781,493.70 = 166,010.69 : x
  2. Step 2: Convert to fraction form
    521,001.49/781,493.70 = 166,010.69/x
  3. Step 3: Cross multiply
    521,001.49x = 781,493.70 × 166,010.69
  4. Step 4: Simplify right side
    521,001.49x = 129,736,308,367.65
  5. Step 5: Solve for x
    x = 129,736,308,367.65/521,001.49
  6. Step 6: Final answer
    x = 249,013.32

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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.