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Finding the Fourth Proportional to 253,009.92, 379,468.80 and 103,211.52

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Solution

The fourth proportional to 253,009.92, 379,468.80 and 103,211.52 is: 154,798.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,009.92 : 379,468.80 = 103,211.52 : x
  2. Step 2: Convert to fraction form
    253,009.92/379,468.80 = 103,211.52/x
  3. Step 3: Cross multiply
    253,009.92x = 379,468.80 × 103,211.52
  4. Step 4: Simplify right side
    253,009.92x = 39,165,551,640.58
  5. Step 5: Solve for x
    x = 39,165,551,640.58/253,009.92
  6. Step 6: Final answer
    x = 154,798.48

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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.