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Finding the Fourth Proportional to 220,801.80, 331,202.70 and 197,992.20

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Solution

The fourth proportional to 220,801.80, 331,202.70 and 197,992.20 is: 296,988.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,801.80 : 331,202.70 = 197,992.20 : x
  2. Step 2: Convert to fraction form
    220,801.80/331,202.70 = 197,992.20/x
  3. Step 3: Cross multiply
    220,801.80x = 331,202.70 × 197,992.20
  4. Step 4: Simplify right side
    220,801.80x = 65,575,551,218.94
  5. Step 5: Solve for x
    x = 65,575,551,218.94/220,801.80
  6. Step 6: Final answer
    x = 296,988.30

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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.