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Finding the Fourth Proportional to 485,023.80, 727,190.10 and 185,388.60

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Solution

The fourth proportional to 485,023.80, 727,190.10 and 185,388.60 is: 277,950.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,023.80 : 727,190.10 = 185,388.60 : x
  2. Step 2: Convert to fraction form
    485,023.80/727,190.10 = 185,388.60/x
  3. Step 3: Cross multiply
    485,023.80x = 727,190.10 × 185,388.60
  4. Step 4: Simplify right side
    485,023.80x = 134,812,754,572.86
  5. Step 5: Solve for x
    x = 134,812,754,572.86/485,023.80
  6. Step 6: Final answer
    x = 277,950.80

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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.