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Finding the Fourth Proportional to 272,348.92, 408,523.38 and 85,375

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Solution

The fourth proportional to 272,348.92, 408,523.38 and 85,375 is: 128,062.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,348.92 : 408,523.38 = 85,375 : x
  2. Step 2: Convert to fraction form
    272,348.92/408,523.38 = 85,375/x
  3. Step 3: Cross multiply
    272,348.92x = 408,523.38 × 85,375
  4. Step 4: Simplify right side
    272,348.92x = 34,877,683,567.50
  5. Step 5: Solve for x
    x = 34,877,683,567.50/272,348.92
  6. Step 6: Final answer
    x = 128,062.50

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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.