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Finding the Fourth Proportional to 485,195.90, 727,793.85 and 248,999.90

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Solution

The fourth proportional to 485,195.90, 727,793.85 and 248,999.90 is: 373,499.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,195.90 : 727,793.85 = 248,999.90 : x
  2. Step 2: Convert to fraction form
    485,195.90/727,793.85 = 248,999.90/x
  3. Step 3: Cross multiply
    485,195.90x = 727,793.85 × 248,999.90
  4. Step 4: Simplify right side
    485,195.90x = 181,220,595,870.62
  5. Step 5: Solve for x
    x = 181,220,595,870.62/485,195.90
  6. Step 6: Final answer
    x = 373,499.85

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Similar ratio
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1.5x scale

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.