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Finding the Fourth Proportional to 220,102.40, 330,007.80 and 79,842.80

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Solution

The fourth proportional to 220,102.40, 330,007.80 and 79,842.80 is: 119,711.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,102.40 : 330,007.80 = 79,842.80 : x
  2. Step 2: Convert to fraction form
    220,102.40/330,007.80 = 79,842.80/x
  3. Step 3: Cross multiply
    220,102.40x = 330,007.80 × 79,842.80
  4. Step 4: Simplify right side
    220,102.40x = 26,348,746,773.84
  5. Step 5: Solve for x
    x = 26,348,746,773.84/220,102.40
  6. Step 6: Final answer
    x = 119,711.31

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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.