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Finding the Fourth Proportional to 225,363.73, 310,989.61 and 123,369.46

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Solution

The fourth proportional to 225,363.73, 310,989.61 and 123,369.46 is: 170,243.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,363.73 : 310,989.61 = 123,369.46 : x
  2. Step 2: Convert to fraction form
    225,363.73/310,989.61 = 123,369.46/x
  3. Step 3: Cross multiply
    225,363.73x = 310,989.61 × 123,369.46
  4. Step 4: Simplify right side
    225,363.73x = 38,366,620,251.31
  5. Step 5: Solve for x
    x = 38,366,620,251.31/225,363.73
  6. Step 6: Final answer
    x = 170,243.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.