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Finding the Fourth Proportional to 323,778.66, 485,630.62 and 87,102.73

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Solution

The fourth proportional to 323,778.66, 485,630.62 and 87,102.73 is: 130,644.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,778.66 : 485,630.62 = 87,102.73 : x
  2. Step 2: Convert to fraction form
    323,778.66/485,630.62 = 87,102.73/x
  3. Step 3: Cross multiply
    323,778.66x = 485,630.62 × 87,102.73
  4. Step 4: Simplify right side
    323,778.66x = 42,299,752,773.59
  5. Step 5: Solve for x
    x = 42,299,752,773.59/323,778.66
  6. Step 6: Final answer
    x = 130,644.04

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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.