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Finding the Fourth Proportional to 220,631.77, 330,881.68 and 80,357.59

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Solution

The fourth proportional to 220,631.77, 330,881.68 and 80,357.59 is: 120,512.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,631.77 : 330,881.68 = 80,357.59 : x
  2. Step 2: Convert to fraction form
    220,631.77/330,881.68 = 80,357.59/x
  3. Step 3: Cross multiply
    220,631.77x = 330,881.68 × 80,357.59
  4. Step 4: Simplify right side
    220,631.77x = 26,588,854,379.95
  5. Step 5: Solve for x
    x = 26,588,854,379.95/220,631.77
  6. Step 6: Final answer
    x = 120,512.36

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1.5x scale

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.