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Finding the Fourth Proportional to 225,885.17, 311,721.65 and 125,283.17

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Solution

The fourth proportional to 225,885.17, 311,721.65 and 125,283.17 is: 172,890.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,885.17 : 311,721.65 = 125,283.17 : x
  2. Step 2: Convert to fraction form
    225,885.17/311,721.65 = 125,283.17/x
  3. Step 3: Cross multiply
    225,885.17x = 311,721.65 × 125,283.17
  4. Step 4: Simplify right side
    225,885.17x = 39,053,477,092.33
  5. Step 5: Solve for x
    x = 39,053,477,092.33/225,885.17
  6. Step 6: Final answer
    x = 172,890.84

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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.