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Finding the Fourth Proportional to 485,033.80, 727,205.10 and 185,398.60

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Solution

The fourth proportional to 485,033.80, 727,205.10 and 185,398.60 is: 277,965.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,033.80 : 727,205.10 = 185,398.60 : x
  2. Step 2: Convert to fraction form
    485,033.80/727,205.10 = 185,398.60/x
  3. Step 3: Cross multiply
    485,033.80x = 727,205.10 × 185,398.60
  4. Step 4: Simplify right side
    485,033.80x = 134,822,807,452.86
  5. Step 5: Solve for x
    x = 134,822,807,452.86/485,033.80
  6. Step 6: Final answer
    x = 277,965.80

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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.