Home / 279,965.76-386,231.28-177,936.64

Finding the Fourth Proportional to 279,965.76, 386,231.28 and 177,936.64

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Solution

The fourth proportional to 279,965.76, 386,231.28 and 177,936.64 is: 245,475.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,965.76 : 386,231.28 = 177,936.64 : x
  2. Step 2: Convert to fraction form
    279,965.76/386,231.28 = 177,936.64/x
  3. Step 3: Cross multiply
    279,965.76x = 386,231.28 × 177,936.64
  4. Step 4: Simplify right side
    279,965.76x = 68,724,696,226.10
  5. Step 5: Solve for x
    x = 68,724,696,226.10/279,965.76
  6. Step 6: Final answer
    x = 245,475.36

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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.