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Finding the Fourth Proportional to 242,725.20, 363,978.45 and 92,915.70

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Solution

The fourth proportional to 242,725.20, 363,978.45 and 92,915.70 is: 139,331.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,725.20 : 363,978.45 = 92,915.70 : x
  2. Step 2: Convert to fraction form
    242,725.20/363,978.45 = 92,915.70/x
  3. Step 3: Cross multiply
    242,725.20x = 363,978.45 × 92,915.70
  4. Step 4: Simplify right side
    242,725.20x = 33,819,312,466.67
  5. Step 5: Solve for x
    x = 33,819,312,466.67/242,725.20
  6. Step 6: Final answer
    x = 139,331.69

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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.