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Finding the Fourth Proportional to 307,778.20, 424,755.24 and 171,838.88

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Solution

The fourth proportional to 307,778.20, 424,755.24 and 171,838.88 is: 237,149.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,778.20 : 424,755.24 = 171,838.88 : x
  2. Step 2: Convert to fraction form
    307,778.20/424,755.24 = 171,838.88/x
  3. Step 3: Cross multiply
    307,778.20x = 424,755.24 × 171,838.88
  4. Step 4: Simplify right side
    307,778.20x = 72,989,464,715.73
  5. Step 5: Solve for x
    x = 72,989,464,715.73/307,778.20
  6. Step 6: Final answer
    x = 237,149.56

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1.5x scale

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.