Home / 320,931.38-442,899.15-177,691.42

Finding the Fourth Proportional to 320,931.38, 442,899.15 and 177,691.42

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Solution

The fourth proportional to 320,931.38, 442,899.15 and 177,691.42 is: 245,221.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,931.38 : 442,899.15 = 177,691.42 : x
  2. Step 2: Convert to fraction form
    320,931.38/442,899.15 = 177,691.42/x
  3. Step 3: Cross multiply
    320,931.38x = 442,899.15 × 177,691.42
  4. Step 4: Simplify right side
    320,931.38x = 78,699,377,991.84
  5. Step 5: Solve for x
    x = 78,699,377,991.84/320,931.38
  6. Step 6: Final answer
    x = 245,221.82

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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.