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Finding the Fourth Proportional to 267,000.80, 400,438.90 and 77,410.28

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Solution

The fourth proportional to 267,000.80, 400,438.90 and 77,410.28 is: 116,097.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,000.80 : 400,438.90 = 77,410.28 : x
  2. Step 2: Convert to fraction form
    267,000.80/400,438.90 = 77,410.28/x
  3. Step 3: Cross multiply
    267,000.80x = 400,438.90 × 77,410.28
  4. Step 4: Simplify right side
    267,000.80x = 30,998,085,781.85
  5. Step 5: Solve for x
    x = 30,998,085,781.85/267,000.80
  6. Step 6: Final answer
    x = 116,097.35

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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.