Home / 439,217.40-658,934.10-123,670.20

Finding the Fourth Proportional to 439,217.40, 658,934.10 and 123,670.20

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Solution

The fourth proportional to 439,217.40, 658,934.10 and 123,670.20 is: 185,535.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,217.40 : 658,934.10 = 123,670.20 : x
  2. Step 2: Convert to fraction form
    439,217.40/658,934.10 = 123,670.20/x
  3. Step 3: Cross multiply
    439,217.40x = 658,934.10 × 123,670.20
  4. Step 4: Simplify right side
    439,217.40x = 81,490,511,933.82
  5. Step 5: Solve for x
    x = 81,490,511,933.82/439,217.40
  6. Step 6: Final answer
    x = 185,535.71

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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.