Home / 279,080.55-418,718.03-121,422.15

Finding the Fourth Proportional to 279,080.55, 418,718.03 and 121,422.15

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Solution

The fourth proportional to 279,080.55, 418,718.03 and 121,422.15 is: 182,175.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,080.55 : 418,718.03 = 121,422.15 : x
  2. Step 2: Convert to fraction form
    279,080.55/418,718.03 = 121,422.15/x
  3. Step 3: Cross multiply
    279,080.55x = 418,718.03 × 121,422.15
  4. Step 4: Simplify right side
    279,080.55x = 50,841,642,839.25
  5. Step 5: Solve for x
    x = 50,841,642,839.25/279,080.55
  6. Step 6: Final answer
    x = 182,175.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.