Home / 279,835.32-386,125.61-157,311.48

Finding the Fourth Proportional to 279,835.32, 386,125.61 and 157,311.48

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Solution

The fourth proportional to 279,835.32, 386,125.61 and 157,311.48 is: 217,063.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,835.32 : 386,125.61 = 157,311.48 : x
  2. Step 2: Convert to fraction form
    279,835.32/386,125.61 = 157,311.48/x
  3. Step 3: Cross multiply
    279,835.32x = 386,125.61 × 157,311.48
  4. Step 4: Simplify right side
    279,835.32x = 60,741,990,388.45
  5. Step 5: Solve for x
    x = 60,741,990,388.45/279,835.32
  6. Step 6: Final answer
    x = 217,063.34

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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.