Home / 426,086.73-639,524.16-215,872.29

Finding the Fourth Proportional to 426,086.73, 639,524.16 and 215,872.29

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Solution

The fourth proportional to 426,086.73, 639,524.16 and 215,872.29 is: 324,008.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,086.73 : 639,524.16 = 215,872.29 : x
  2. Step 2: Convert to fraction form
    426,086.73/639,524.16 = 215,872.29/x
  3. Step 3: Cross multiply
    426,086.73x = 639,524.16 × 215,872.29
  4. Step 4: Simplify right side
    426,086.73x = 138,055,544,929.53
  5. Step 5: Solve for x
    x = 138,055,544,929.53/426,086.73
  6. Step 6: Final answer
    x = 324,008.08

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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.