Home / 218,889.72-302,067.36-123,397.20

Finding the Fourth Proportional to 218,889.72, 302,067.36 and 123,397.20

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Solution

The fourth proportional to 218,889.72, 302,067.36 and 123,397.20 is: 170,287.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,889.72 : 302,067.36 = 123,397.20 : x
  2. Step 2: Convert to fraction form
    218,889.72/302,067.36 = 123,397.20/x
  3. Step 3: Cross multiply
    218,889.72x = 302,067.36 × 123,397.20
  4. Step 4: Simplify right side
    218,889.72x = 37,274,266,435.39
  5. Step 5: Solve for x
    x = 37,274,266,435.39/218,889.72
  6. Step 6: Final answer
    x = 170,287.88

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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.