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Finding the Fourth Proportional to 257,737.80, 386,703.90 and 124,735.80

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Solution

The fourth proportional to 257,737.80, 386,703.90 and 124,735.80 is: 187,150.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,737.80 : 386,703.90 = 124,735.80 : x
  2. Step 2: Convert to fraction form
    257,737.80/386,703.90 = 124,735.80/x
  3. Step 3: Cross multiply
    257,737.80x = 386,703.90 × 124,735.80
  4. Step 4: Simplify right side
    257,737.80x = 48,235,820,329.62
  5. Step 5: Solve for x
    x = 48,235,820,329.62/257,737.80
  6. Step 6: Final answer
    x = 187,150.74

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1.5x scale

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.