Home / 498,890.30-748,335.45-143,915.90

Finding the Fourth Proportional to 498,890.30, 748,335.45 and 143,915.90

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Solution

The fourth proportional to 498,890.30, 748,335.45 and 143,915.90 is: 215,873.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,890.30 : 748,335.45 = 143,915.90 : x
  2. Step 2: Convert to fraction form
    498,890.30/748,335.45 = 143,915.90/x
  3. Step 3: Cross multiply
    498,890.30x = 748,335.45 × 143,915.90
  4. Step 4: Simplify right side
    498,890.30x = 107,697,369,788.66
  5. Step 5: Solve for x
    x = 107,697,369,788.66/498,890.30
  6. Step 6: Final answer
    x = 215,873.85

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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.