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Finding the Fourth Proportional to 454,711.15, 627,516.51 and 247,990.78

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Solution

The fourth proportional to 454,711.15, 627,516.51 and 247,990.78 is: 342,235.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,711.15 : 627,516.51 = 247,990.78 : x
  2. Step 2: Convert to fraction form
    454,711.15/627,516.51 = 247,990.78/x
  3. Step 3: Cross multiply
    454,711.15x = 627,516.51 × 247,990.78
  4. Step 4: Simplify right side
    454,711.15x = 155,618,308,777.78
  5. Step 5: Solve for x
    x = 155,618,308,777.78/454,711.15
  6. Step 6: Final answer
    x = 342,235.52

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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.