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Finding the Fourth Proportional to 225,520.20, 311,218.20 and 124,918.20

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Solution

The fourth proportional to 225,520.20, 311,218.20 and 124,918.20 is: 172,387.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,520.20 : 311,218.20 = 124,918.20 : x
  2. Step 2: Convert to fraction form
    225,520.20/311,218.20 = 124,918.20/x
  3. Step 3: Cross multiply
    225,520.20x = 311,218.20 × 124,918.20
  4. Step 4: Simplify right side
    225,520.20x = 38,876,817,351.24
  5. Step 5: Solve for x
    x = 38,876,817,351.24/225,520.20
  6. Step 6: Final answer
    x = 172,387.30

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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.