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Finding the Fourth Proportional to 438,516.64, 605,152.72 and 247,531.68

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Solution

The fourth proportional to 438,516.64, 605,152.72 and 247,531.68 is: 341,593.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,516.64 : 605,152.72 = 247,531.68 : x
  2. Step 2: Convert to fraction form
    438,516.64/605,152.72 = 247,531.68/x
  3. Step 3: Cross multiply
    438,516.64x = 605,152.72 × 247,531.68
  4. Step 4: Simplify right side
    438,516.64x = 149,794,469,438.17
  5. Step 5: Solve for x
    x = 149,794,469,438.17/438,516.64
  6. Step 6: Final answer
    x = 341,593.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.