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Finding the Fourth Proportional to 382,974.40, 574,487.20 and 130,251.20

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Solution

The fourth proportional to 382,974.40, 574,487.20 and 130,251.20 is: 195,385.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,974.40 : 574,487.20 = 130,251.20 : x
  2. Step 2: Convert to fraction form
    382,974.40/574,487.20 = 130,251.20/x
  3. Step 3: Cross multiply
    382,974.40x = 574,487.20 × 130,251.20
  4. Step 4: Simplify right side
    382,974.40x = 74,827,647,184.64
  5. Step 5: Solve for x
    x = 74,827,647,184.64/382,974.40
  6. Step 6: Final answer
    x = 195,385.51

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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.