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Finding the Fourth Proportional to 220,180.60, 330,281.70 and 115,204.60

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Solution

The fourth proportional to 220,180.60, 330,281.70 and 115,204.60 is: 172,812.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,180.60 : 330,281.70 = 115,204.60 : x
  2. Step 2: Convert to fraction form
    220,180.60/330,281.70 = 115,204.60/x
  3. Step 3: Cross multiply
    220,180.60x = 330,281.70 × 115,204.60
  4. Step 4: Simplify right side
    220,180.60x = 38,049,971,135.82
  5. Step 5: Solve for x
    x = 38,049,971,135.82/220,180.60
  6. Step 6: Final answer
    x = 172,812.55

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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.