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Finding the Fourth Proportional to 487,397.88, 731,109.38 and 231,170.58

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Solution

The fourth proportional to 487,397.88, 731,109.38 and 231,170.58 is: 346,761.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,397.88 : 731,109.38 = 231,170.58 : x
  2. Step 2: Convert to fraction form
    487,397.88/731,109.38 = 231,170.58/x
  3. Step 3: Cross multiply
    487,397.88x = 731,109.38 × 231,170.58
  4. Step 4: Simplify right side
    487,397.88x = 169,010,978,262.19
  5. Step 5: Solve for x
    x = 169,010,978,262.19/487,397.88
  6. Step 6: Final answer
    x = 346,761.82

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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.