Home / 279,141.32-385,217.55-165,942.20

Finding the Fourth Proportional to 279,141.32, 385,217.55 and 165,942.20

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Solution

The fourth proportional to 279,141.32, 385,217.55 and 165,942.20 is: 229,001.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,141.32 : 385,217.55 = 165,942.20 : x
  2. Step 2: Convert to fraction form
    279,141.32/385,217.55 = 165,942.20/x
  3. Step 3: Cross multiply
    279,141.32x = 385,217.55 × 165,942.20
  4. Step 4: Simplify right side
    279,141.32x = 63,923,845,799.52
  5. Step 5: Solve for x
    x = 63,923,845,799.52/279,141.32
  6. Step 6: Final answer
    x = 229,001.74

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1.5x scale

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.