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Finding the Fourth Proportional to 238,620.78, 357,931.17 and 98,375.76

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Solution

The fourth proportional to 238,620.78, 357,931.17 and 98,375.76 is: 147,563.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,620.78 : 357,931.17 = 98,375.76 : x
  2. Step 2: Convert to fraction form
    238,620.78/357,931.17 = 98,375.76/x
  3. Step 3: Cross multiply
    238,620.78x = 357,931.17 × 98,375.76
  4. Step 4: Simplify right side
    238,620.78x = 35,211,750,876.44
  5. Step 5: Solve for x
    x = 35,211,750,876.44/238,620.78
  6. Step 6: Final answer
    x = 147,563.64

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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.