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Finding the Fourth Proportional to 397,691.39, 596,630.51 and 131,451.90

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Solution

The fourth proportional to 397,691.39, 596,630.51 and 131,451.90 is: 197,208.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,691.39 : 596,630.51 = 131,451.90 : x
  2. Step 2: Convert to fraction form
    397,691.39/596,630.51 = 131,451.90/x
  3. Step 3: Cross multiply
    397,691.39x = 596,630.51 × 131,451.90
  4. Step 4: Simplify right side
    397,691.39x = 78,428,216,703.46
  5. Step 5: Solve for x
    x = 78,428,216,703.46/397,691.39
  6. Step 6: Final answer
    x = 197,208.74

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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.