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Finding the Fourth Proportional to 487,488.26, 731,247.60 and 132,509.82

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Solution

The fourth proportional to 487,488.26, 731,247.60 and 132,509.82 is: 198,768.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,488.26 : 731,247.60 = 132,509.82 : x
  2. Step 2: Convert to fraction form
    487,488.26/731,247.60 = 132,509.82/x
  3. Step 3: Cross multiply
    487,488.26x = 731,247.60 × 132,509.82
  4. Step 4: Simplify right side
    487,488.26x = 96,897,487,851.43
  5. Step 5: Solve for x
    x = 96,897,487,851.43/487,488.26
  6. Step 6: Final answer
    x = 198,768.86

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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.