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Finding the Fourth Proportional to 225,646.96, 338,474.28 and 85,471.60

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Solution

The fourth proportional to 225,646.96, 338,474.28 and 85,471.60 is: 128,208.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,646.96 : 338,474.28 = 85,471.60 : x
  2. Step 2: Convert to fraction form
    225,646.96/338,474.28 = 85,471.60/x
  3. Step 3: Cross multiply
    225,646.96x = 338,474.28 × 85,471.60
  4. Step 4: Simplify right side
    225,646.96x = 28,929,938,270.45
  5. Step 5: Solve for x
    x = 28,929,938,270.45/225,646.96
  6. Step 6: Final answer
    x = 128,208.85

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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.