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Finding the Fourth Proportional to 324,981.56, 487,472.40 and 88,359.20

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Solution

The fourth proportional to 324,981.56, 487,472.40 and 88,359.20 is: 132,538.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,981.56 : 487,472.40 = 88,359.20 : x
  2. Step 2: Convert to fraction form
    324,981.56/487,472.40 = 88,359.20/x
  3. Step 3: Cross multiply
    324,981.56x = 487,472.40 × 88,359.20
  4. Step 4: Simplify right side
    324,981.56x = 43,072,671,286.08
  5. Step 5: Solve for x
    x = 43,072,671,286.08/324,981.56
  6. Step 6: Final answer
    x = 132,538.82

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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.