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Finding the Fourth Proportional to 439,691.77, 659,585.45 and 140,101.93

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Solution

The fourth proportional to 439,691.77, 659,585.45 and 140,101.93 is: 210,168.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,691.77 : 659,585.45 = 140,101.93 : x
  2. Step 2: Convert to fraction form
    439,691.77/659,585.45 = 140,101.93/x
  3. Step 3: Cross multiply
    439,691.77x = 659,585.45 × 140,101.93
  4. Step 4: Simplify right side
    439,691.77x = 92,409,194,544.92
  5. Step 5: Solve for x
    x = 92,409,194,544.92/439,691.77
  6. Step 6: Final answer
    x = 210,168.12

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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.