Home / 279,930.67-386,292.83-157,419.55

Finding the Fourth Proportional to 279,930.67, 386,292.83 and 157,419.55

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Solution

The fourth proportional to 279,930.67, 386,292.83 and 157,419.55 is: 217,232.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,930.67 : 386,292.83 = 157,419.55 : x
  2. Step 2: Convert to fraction form
    279,930.67/386,292.83 = 157,419.55/x
  3. Step 3: Cross multiply
    279,930.67x = 386,292.83 × 157,419.55
  4. Step 4: Simplify right side
    279,930.67x = 60,810,040,748.26
  5. Step 5: Solve for x
    x = 60,810,040,748.26/279,930.67
  6. Step 6: Final answer
    x = 217,232.51

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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.