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Finding the Fourth Proportional to 257,545.70, 386,318.55 and 247,048.10

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Solution

The fourth proportional to 257,545.70, 386,318.55 and 247,048.10 is: 370,572.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,545.70 : 386,318.55 = 247,048.10 : x
  2. Step 2: Convert to fraction form
    257,545.70/386,318.55 = 247,048.10/x
  3. Step 3: Cross multiply
    257,545.70x = 386,318.55 × 247,048.10
  4. Step 4: Simplify right side
    257,545.70x = 95,439,263,772.26
  5. Step 5: Solve for x
    x = 95,439,263,772.26/257,545.70
  6. Step 6: Final answer
    x = 370,572.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.