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Finding the Fourth Proportional to 531,334.80, 797,002.20 and 278,517.60

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Solution

The fourth proportional to 531,334.80, 797,002.20 and 278,517.60 is: 417,776.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,334.80 : 797,002.20 = 278,517.60 : x
  2. Step 2: Convert to fraction form
    531,334.80/797,002.20 = 278,517.60/x
  3. Step 3: Cross multiply
    531,334.80x = 797,002.20 × 278,517.60
  4. Step 4: Simplify right side
    531,334.80x = 221,979,139,938.72
  5. Step 5: Solve for x
    x = 221,979,139,938.72/531,334.80
  6. Step 6: Final answer
    x = 417,776.40

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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.