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Finding the Fourth Proportional to 307,748.56, 424,691.86 and 171,781.32

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Solution

The fourth proportional to 307,748.56, 424,691.86 and 171,781.32 is: 237,057.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,748.56 : 424,691.86 = 171,781.32 : x
  2. Step 2: Convert to fraction form
    307,748.56/424,691.86 = 171,781.32/x
  3. Step 3: Cross multiply
    307,748.56x = 424,691.86 × 171,781.32
  4. Step 4: Simplify right side
    307,748.56x = 72,954,126,205.95
  5. Step 5: Solve for x
    x = 72,954,126,205.95/307,748.56
  6. Step 6: Final answer
    x = 237,057.57

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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.