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Finding the Fourth Proportional to 487,467.14, 731,215.69 and 132,488.69

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Solution

The fourth proportional to 487,467.14, 731,215.69 and 132,488.69 is: 198,737.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,467.14 : 731,215.69 = 132,488.69 : x
  2. Step 2: Convert to fraction form
    487,467.14/731,215.69 = 132,488.69/x
  3. Step 3: Cross multiply
    487,467.14x = 731,215.69 × 132,488.69
  4. Step 4: Simplify right side
    487,467.14x = 96,877,804,888.25
  5. Step 5: Solve for x
    x = 96,877,804,888.25/487,467.14
  6. Step 6: Final answer
    x = 198,737.10

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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.