Home / 279,990.06-386,376.66-159,129.24

Finding the Fourth Proportional to 279,990.06, 386,376.66 and 159,129.24

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Solution

The fourth proportional to 279,990.06, 386,376.66 and 159,129.24 is: 219,592.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,990.06 : 386,376.66 = 159,129.24 : x
  2. Step 2: Convert to fraction form
    279,990.06/386,376.66 = 159,129.24/x
  3. Step 3: Cross multiply
    279,990.06x = 386,376.66 × 159,129.24
  4. Step 4: Simplify right side
    279,990.06x = 61,483,824,259.54
  5. Step 5: Solve for x
    x = 61,483,824,259.54/279,990.06
  6. Step 6: Final answer
    x = 219,592.88

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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.