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Finding the Fourth Proportional to 225,486.72, 311,171.22 and 123,514.20

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Solution

The fourth proportional to 225,486.72, 311,171.22 and 123,514.20 is: 170,449.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,486.72 : 311,171.22 = 123,514.20 : x
  2. Step 2: Convert to fraction form
    225,486.72/311,171.22 = 123,514.20/x
  3. Step 3: Cross multiply
    225,486.72x = 311,171.22 × 123,514.20
  4. Step 4: Simplify right side
    225,486.72x = 38,434,064,301.32
  5. Step 5: Solve for x
    x = 38,434,064,301.32/225,486.72
  6. Step 6: Final answer
    x = 170,449.35

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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.