Home / 279,835.27-386,186.38-157,366.20

Finding the Fourth Proportional to 279,835.27, 386,186.38 and 157,366.20

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Solution

The fourth proportional to 279,835.27, 386,186.38 and 157,366.20 is: 217,173.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,835.27 : 386,186.38 = 157,366.20 : x
  2. Step 2: Convert to fraction form
    279,835.27/386,186.38 = 157,366.20/x
  3. Step 3: Cross multiply
    279,835.27x = 386,186.38 × 157,366.20
  4. Step 4: Simplify right side
    279,835.27x = 60,772,680,788.01
  5. Step 5: Solve for x
    x = 60,772,680,788.01/279,835.27
  6. Step 6: Final answer
    x = 217,173.05

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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.