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Finding the Fourth Proportional to 482,500.80, 665,751.42 and 278,548.20

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Solution

The fourth proportional to 482,500.80, 665,751.42 and 278,548.20 is: 384,338.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,500.80 : 665,751.42 = 278,548.20 : x
  2. Step 2: Convert to fraction form
    482,500.80/665,751.42 = 278,548.20/x
  3. Step 3: Cross multiply
    482,500.80x = 665,751.42 × 278,548.20
  4. Step 4: Simplify right side
    482,500.80x = 185,443,859,688.44
  5. Step 5: Solve for x
    x = 185,443,859,688.44/482,500.80
  6. Step 6: Final answer
    x = 384,338.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.