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Finding the Fourth Proportional to 402,209.80, 603,314.70 and 267,490.60

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Solution

The fourth proportional to 402,209.80, 603,314.70 and 267,490.60 is: 401,235.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,209.80 : 603,314.70 = 267,490.60 : x
  2. Step 2: Convert to fraction form
    402,209.80/603,314.70 = 267,490.60/x
  3. Step 3: Cross multiply
    402,209.80x = 603,314.70 × 267,490.60
  4. Step 4: Simplify right side
    402,209.80x = 161,381,011,091.82
  5. Step 5: Solve for x
    x = 161,381,011,091.82/402,209.80
  6. Step 6: Final answer
    x = 401,235.90

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Similar ratio
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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.