Home / 219,207.12-328,613.22-78,867

Finding the Fourth Proportional to 219,207.12, 328,613.22 and 78,867

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Solution

The fourth proportional to 219,207.12, 328,613.22 and 78,867 is: 118,229.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,207.12 : 328,613.22 = 78,867 : x
  2. Step 2: Convert to fraction form
    219,207.12/328,613.22 = 78,867/x
  3. Step 3: Cross multiply
    219,207.12x = 328,613.22 × 78,867
  4. Step 4: Simplify right side
    219,207.12x = 25,916,738,821.74
  5. Step 5: Solve for x
    x = 25,916,738,821.74/219,207.12
  6. Step 6: Final answer
    x = 118,229.46

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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.