Home / 279,732.12-386,176.31-218,346.49

Finding the Fourth Proportional to 279,732.12, 386,176.31 and 218,346.49

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Solution

The fourth proportional to 279,732.12, 386,176.31 and 218,346.49 is: 301,432.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,732.12 : 386,176.31 = 218,346.49 : x
  2. Step 2: Convert to fraction form
    279,732.12/386,176.31 = 218,346.49/x
  3. Step 3: Cross multiply
    279,732.12x = 386,176.31 × 218,346.49
  4. Step 4: Simplify right side
    279,732.12x = 84,320,241,809.65
  5. Step 5: Solve for x
    x = 84,320,241,809.65/279,732.12
  6. Step 6: Final answer
    x = 301,432.11

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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.