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Finding the Fourth Proportional to 225,377.76, 311,026.08 and 123,407.52

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Solution

The fourth proportional to 225,377.76, 311,026.08 and 123,407.52 is: 170,304.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,377.76 : 311,026.08 = 123,407.52 : x
  2. Step 2: Convert to fraction form
    225,377.76/311,026.08 = 123,407.52/x
  3. Step 3: Cross multiply
    225,377.76x = 311,026.08 × 123,407.52
  4. Step 4: Simplify right side
    225,377.76x = 38,382,957,188.12
  5. Step 5: Solve for x
    x = 38,382,957,188.12/225,377.76
  6. Step 6: Final answer
    x = 170,304.99

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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.