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Finding the Fourth Proportional to 485,041.80, 727,217.10 and 185,406.60

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Solution

The fourth proportional to 485,041.80, 727,217.10 and 185,406.60 is: 277,977.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,041.80 : 727,217.10 = 185,406.60 : x
  2. Step 2: Convert to fraction form
    485,041.80/727,217.10 = 185,406.60/x
  3. Step 3: Cross multiply
    485,041.80x = 727,217.10 × 185,406.60
  4. Step 4: Simplify right side
    485,041.80x = 134,830,849,972.86
  5. Step 5: Solve for x
    x = 134,830,849,972.86/485,041.80
  6. Step 6: Final answer
    x = 277,977.79

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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.