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Finding the Fourth Proportional to 225,897.04, 338,857.08 and 85,667.28

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Solution

The fourth proportional to 225,897.04, 338,857.08 and 85,667.28 is: 128,505.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,897.04 : 338,857.08 = 85,667.28 : x
  2. Step 2: Convert to fraction form
    225,897.04/338,857.08 = 85,667.28/x
  3. Step 3: Cross multiply
    225,897.04x = 338,857.08 × 85,667.28
  4. Step 4: Simplify right side
    225,897.04x = 29,028,964,352.34
  5. Step 5: Solve for x
    x = 29,028,964,352.34/225,897.04
  6. Step 6: Final answer
    x = 128,505.29

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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.