Home / 218,429.09-327,643.34-68,682.47

Finding the Fourth Proportional to 218,429.09, 327,643.34 and 68,682.47

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Solution

The fourth proportional to 218,429.09, 327,643.34 and 68,682.47 is: 103,023.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,429.09 : 327,643.34 = 68,682.47 : x
  2. Step 2: Convert to fraction form
    218,429.09/327,643.34 = 68,682.47/x
  3. Step 3: Cross multiply
    218,429.09x = 327,643.34 × 68,682.47
  4. Step 4: Simplify right side
    218,429.09x = 22,503,353,870.25
  5. Step 5: Solve for x
    x = 22,503,353,870.25/218,429.09
  6. Step 6: Final answer
    x = 103,023.61

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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.