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Finding the Fourth Proportional to 242,654.80, 363,982.20 and 220,493.20

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Solution

The fourth proportional to 242,654.80, 363,982.20 and 220,493.20 is: 330,739.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,654.80 : 363,982.20 = 220,493.20 : x
  2. Step 2: Convert to fraction form
    242,654.80/363,982.20 = 220,493.20/x
  3. Step 3: Cross multiply
    242,654.80x = 363,982.20 × 220,493.20
  4. Step 4: Simplify right side
    242,654.80x = 80,255,600,021.04
  5. Step 5: Solve for x
    x = 80,255,600,021.04/242,654.80
  6. Step 6: Final answer
    x = 330,739.80

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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.