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Finding the Fourth Proportional to 220,566.40, 330,849.60 and 80,329.60

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Solution

The fourth proportional to 220,566.40, 330,849.60 and 80,329.60 is: 120,494.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,566.40 : 330,849.60 = 80,329.60 : x
  2. Step 2: Convert to fraction form
    220,566.40/330,849.60 = 80,329.60/x
  3. Step 3: Cross multiply
    220,566.40x = 330,849.60 × 80,329.60
  4. Step 4: Simplify right side
    220,566.40x = 26,577,016,028.16
  5. Step 5: Solve for x
    x = 26,577,016,028.16/220,566.40
  6. Step 6: Final answer
    x = 120,494.40

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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.