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Finding the Fourth Proportional to 324,645.60, 487,114.20 and 147,061.20

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Solution

The fourth proportional to 324,645.60, 487,114.20 and 147,061.20 is: 220,657.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,645.60 : 487,114.20 = 147,061.20 : x
  2. Step 2: Convert to fraction form
    324,645.60/487,114.20 = 147,061.20/x
  3. Step 3: Cross multiply
    324,645.60x = 487,114.20 × 147,061.20
  4. Step 4: Simplify right side
    324,645.60x = 71,635,598,789.04
  5. Step 5: Solve for x
    x = 71,635,598,789.04/324,645.60
  6. Step 6: Final answer
    x = 220,657.85

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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.