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Finding the Fourth Proportional to 253,257.28, 379,745.65 and 103,602.62

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Solution

The fourth proportional to 253,257.28, 379,745.65 and 103,602.62 is: 155,346.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,257.28 : 379,745.65 = 103,602.62 : x
  2. Step 2: Convert to fraction form
    253,257.28/379,745.65 = 103,602.62/x
  3. Step 3: Cross multiply
    253,257.28x = 379,745.65 × 103,602.62
  4. Step 4: Simplify right side
    253,257.28x = 39,342,644,273.60
  5. Step 5: Solve for x
    x = 39,342,644,273.60/253,257.28
  6. Step 6: Final answer
    x = 155,346.55

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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.