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Finding the Fourth Proportional to 225,839.76, 311,659.92 and 125,237.76

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Solution

The fourth proportional to 225,839.76, 311,659.92 and 125,237.76 is: 172,828.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,839.76 : 311,659.92 = 125,237.76 : x
  2. Step 2: Convert to fraction form
    225,839.76/311,659.92 = 125,237.76/x
  3. Step 3: Cross multiply
    225,839.76x = 311,659.92 × 125,237.76
  4. Step 4: Simplify right side
    225,839.76x = 39,031,590,262.58
  5. Step 5: Solve for x
    x = 39,031,590,262.58/225,839.76
  6. Step 6: Final answer
    x = 172,828.69

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1.5x scale

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.