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Finding the Fourth Proportional to 225,196.17, 310,765.91 and 123,221.22

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Solution

The fourth proportional to 225,196.17, 310,765.91 and 123,221.22 is: 170,042.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,196.17 : 310,765.91 = 123,221.22 : x
  2. Step 2: Convert to fraction form
    225,196.17/310,765.91 = 123,221.22/x
  3. Step 3: Cross multiply
    225,196.17x = 310,765.91 × 123,221.22
  4. Step 4: Simplify right side
    225,196.17x = 38,292,954,564.61
  5. Step 5: Solve for x
    x = 38,292,954,564.61/225,196.17
  6. Step 6: Final answer
    x = 170,042.65

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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.