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Finding the Fourth Proportional to 237,474.76, 327,711.20 and 128,578.21

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Solution

The fourth proportional to 237,474.76, 327,711.20 and 128,578.21 is: 177,435.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    237,474.76 : 327,711.20 = 128,578.21 : x
  2. Step 2: Convert to fraction form
    237,474.76/327,711.20 = 128,578.21/x
  3. Step 3: Cross multiply
    237,474.76x = 327,711.20 × 128,578.21
  4. Step 4: Simplify right side
    237,474.76x = 42,136,517,854.40
  5. Step 5: Solve for x
    x = 42,136,517,854.40/237,474.76
  6. Step 6: Final answer
    x = 177,435.78

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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.