Home / 279,947.48-386,333.33-157,442.21

Finding the Fourth Proportional to 279,947.48, 386,333.33 and 157,442.21

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Solution

The fourth proportional to 279,947.48, 386,333.33 and 157,442.21 is: 217,273.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,947.48 : 386,333.33 = 157,442.21 : x
  2. Step 2: Convert to fraction form
    279,947.48/386,333.33 = 157,442.21/x
  3. Step 3: Cross multiply
    279,947.48x = 386,333.33 × 157,442.21
  4. Step 4: Simplify right side
    279,947.48x = 60,825,170,552.98
  5. Step 5: Solve for x
    x = 60,825,170,552.98/279,947.48
  6. Step 6: Final answer
    x = 217,273.51

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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.