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Finding the Fourth Proportional to 220,627.03, 330,649.83 and 87,434.68

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Solution

The fourth proportional to 220,627.03, 330,649.83 and 87,434.68 is: 131,036.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,627.03 : 330,649.83 = 87,434.68 : x
  2. Step 2: Convert to fraction form
    220,627.03/330,649.83 = 87,434.68/x
  3. Step 3: Cross multiply
    220,627.03x = 330,649.83 × 87,434.68
  4. Step 4: Simplify right side
    220,627.03x = 28,910,262,078.10
  5. Step 5: Solve for x
    x = 28,910,262,078.10/220,627.03
  6. Step 6: Final answer
    x = 131,036.81

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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.