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Finding the Fourth Proportional to 220,124.40, 330,186.60 and 218,050.80

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Solution

The fourth proportional to 220,124.40, 330,186.60 and 218,050.80 is: 327,076.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,124.40 : 330,186.60 = 218,050.80 : x
  2. Step 2: Convert to fraction form
    220,124.40/330,186.60 = 218,050.80/x
  3. Step 3: Cross multiply
    220,124.40x = 330,186.60 × 218,050.80
  4. Step 4: Simplify right side
    220,124.40x = 71,997,452,279.28
  5. Step 5: Solve for x
    x = 71,997,452,279.28/220,124.40
  6. Step 6: Final answer
    x = 327,076.20

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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.