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Finding the Fourth Proportional to 178,439.40, 267,658.92 and 53,780.40

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Solution

The fourth proportional to 178,439.40, 267,658.92 and 53,780.40 is: 80,670.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,439.40 : 267,658.92 = 53,780.40 : x
  2. Step 2: Convert to fraction form
    178,439.40/267,658.92 = 53,780.40/x
  3. Step 3: Cross multiply
    178,439.40x = 267,658.92 × 53,780.40
  4. Step 4: Simplify right side
    178,439.40x = 14,394,803,781.17
  5. Step 5: Solve for x
    x = 14,394,803,781.17/178,439.40
  6. Step 6: Final answer
    x = 80,670.55

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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.