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Finding the Fourth Proportional to 487,685.27, 731,590.21 and 188,251.48

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Solution

The fourth proportional to 487,685.27, 731,590.21 and 188,251.48 is: 282,401.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,685.27 : 731,590.21 = 188,251.48 : x
  2. Step 2: Convert to fraction form
    487,685.27/731,590.21 = 188,251.48/x
  3. Step 3: Cross multiply
    487,685.27x = 731,590.21 × 188,251.48
  4. Step 4: Simplify right side
    487,685.27x = 137,722,940,935.81
  5. Step 5: Solve for x
    x = 137,722,940,935.81/487,685.27
  6. Step 6: Final answer
    x = 282,401.27

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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.