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Finding the Fourth Proportional to 487,374.12, 731,119.50 and 171,765.72

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Solution

The fourth proportional to 487,374.12, 731,119.50 and 171,765.72 is: 257,669.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,374.12 : 731,119.50 = 171,765.72 : x
  2. Step 2: Convert to fraction form
    487,374.12/731,119.50 = 171,765.72/x
  3. Step 3: Cross multiply
    487,374.12x = 731,119.50 × 171,765.72
  4. Step 4: Simplify right side
    487,374.12x = 125,581,267,323.54
  5. Step 5: Solve for x
    x = 125,581,267,323.54/487,374.12
  6. Step 6: Final answer
    x = 257,669.13

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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.