Home / 225,417.12-311,005.08-129,910.76

Finding the Fourth Proportional to 225,417.12, 311,005.08 and 129,910.76

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Solution

The fourth proportional to 225,417.12, 311,005.08 and 129,910.76 is: 179,236.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,417.12 : 311,005.08 = 129,910.76 : x
  2. Step 2: Convert to fraction form
    225,417.12/311,005.08 = 129,910.76/x
  3. Step 3: Cross multiply
    225,417.12x = 311,005.08 × 129,910.76
  4. Step 4: Simplify right side
    225,417.12x = 40,402,906,306.66
  5. Step 5: Solve for x
    x = 40,402,906,306.66/225,417.12
  6. Step 6: Final answer
    x = 179,236.19

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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.