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Finding the Fourth Proportional to 262,337.70, 393,506.55 and 178,138.20

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Solution

The fourth proportional to 262,337.70, 393,506.55 and 178,138.20 is: 267,207.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,337.70 : 393,506.55 = 178,138.20 : x
  2. Step 2: Convert to fraction form
    262,337.70/393,506.55 = 178,138.20/x
  3. Step 3: Cross multiply
    262,337.70x = 393,506.55 × 178,138.20
  4. Step 4: Simplify right side
    262,337.70x = 70,098,548,505.21
  5. Step 5: Solve for x
    x = 70,098,548,505.21/262,337.70
  6. Step 6: Final answer
    x = 267,207.30

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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.