Home / 458,221.73-687,331.98-258,451.43

Finding the Fourth Proportional to 458,221.73, 687,331.98 and 258,451.43

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Solution

The fourth proportional to 458,221.73, 687,331.98 and 258,451.43 is: 387,676.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,221.73 : 687,331.98 = 258,451.43 : x
  2. Step 2: Convert to fraction form
    458,221.73/687,331.98 = 258,451.43/x
  3. Step 3: Cross multiply
    458,221.73x = 687,331.98 × 258,451.43
  4. Step 4: Simplify right side
    458,221.73x = 177,641,929,679.07
  5. Step 5: Solve for x
    x = 177,641,929,679.07/458,221.73
  6. Step 6: Final answer
    x = 387,676.79

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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.