Home / 279,956.10-386,322.77-159,080.61

Finding the Fourth Proportional to 279,956.10, 386,322.77 and 159,080.61

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Solution

The fourth proportional to 279,956.10, 386,322.77 and 159,080.61 is: 219,521.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,956.10 : 386,322.77 = 159,080.61 : x
  2. Step 2: Convert to fraction form
    279,956.10/386,322.77 = 159,080.61/x
  3. Step 3: Cross multiply
    279,956.10x = 386,322.77 × 159,080.61
  4. Step 4: Simplify right side
    279,956.10x = 61,456,461,908.49
  5. Step 5: Solve for x
    x = 61,456,461,908.49/279,956.10
  6. Step 6: Final answer
    x = 219,521.78

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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.