Home / 485,836.23-728,728.07-148,877.85

Finding the Fourth Proportional to 485,836.23, 728,728.07 and 148,877.85

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Solution

The fourth proportional to 485,836.23, 728,728.07 and 148,877.85 is: 223,308.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,836.23 : 728,728.07 = 148,877.85 : x
  2. Step 2: Convert to fraction form
    485,836.23/728,728.07 = 148,877.85/x
  3. Step 3: Cross multiply
    485,836.23x = 728,728.07 × 148,877.85
  4. Step 4: Simplify right side
    485,836.23x = 108,491,467,551.86
  5. Step 5: Solve for x
    x = 108,491,467,551.86/485,836.23
  6. Step 6: Final answer
    x = 223,308.72

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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.