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Finding the Fourth Proportional to 252,951.68, 349,080.36 and 139,781.72

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Solution

The fourth proportional to 252,951.68, 349,080.36 and 139,781.72 is: 192,902.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,951.68 : 349,080.36 = 139,781.72 : x
  2. Step 2: Convert to fraction form
    252,951.68/349,080.36 = 139,781.72/x
  3. Step 3: Cross multiply
    252,951.68x = 349,080.36 × 139,781.72
  4. Step 4: Simplify right side
    252,951.68x = 48,795,053,139.02
  5. Step 5: Solve for x
    x = 48,795,053,139.02/252,951.68
  6. Step 6: Final answer
    x = 192,902.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.