Home / 279,049.12-418,564.32-121,277.56

Finding the Fourth Proportional to 279,049.12, 418,564.32 and 121,277.56

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Solution

The fourth proportional to 279,049.12, 418,564.32 and 121,277.56 is: 181,912.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,049.12 : 418,564.32 = 121,277.56 : x
  2. Step 2: Convert to fraction form
    279,049.12/418,564.32 = 121,277.56/x
  3. Step 3: Cross multiply
    279,049.12x = 418,564.32 × 121,277.56
  4. Step 4: Simplify right side
    279,049.12x = 50,762,459,432.66
  5. Step 5: Solve for x
    x = 50,762,459,432.66/279,049.12
  6. Step 6: Final answer
    x = 181,912.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.