Home / 257,931.72-386,839.67-108,340.92

Finding the Fourth Proportional to 257,931.72, 386,839.67 and 108,340.92

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Solution

The fourth proportional to 257,931.72, 386,839.67 and 108,340.92 is: 162,487.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,931.72 : 386,839.67 = 108,340.92 : x
  2. Step 2: Convert to fraction form
    257,931.72/386,839.67 = 108,340.92/x
  3. Step 3: Cross multiply
    257,931.72x = 386,839.67 × 108,340.92
  4. Step 4: Simplify right side
    257,931.72x = 41,910,565,198.59
  5. Step 5: Solve for x
    x = 41,910,565,198.59/257,931.72
  6. Step 6: Final answer
    x = 162,487.05

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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.