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Finding the Fourth Proportional to 178,391.76, 267,621.04 and 145,400.88

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Solution

The fourth proportional to 178,391.76, 267,621.04 and 145,400.88 is: 218,128.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,391.76 : 267,621.04 = 145,400.88 : x
  2. Step 2: Convert to fraction form
    178,391.76/267,621.04 = 145,400.88/x
  3. Step 3: Cross multiply
    178,391.76x = 267,621.04 × 145,400.88
  4. Step 4: Simplify right side
    178,391.76x = 38,912,334,722.52
  5. Step 5: Solve for x
    x = 38,912,334,722.52/178,391.76
  6. Step 6: Final answer
    x = 218,128.54

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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.