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Finding the Fourth Proportional to 242,665.40, 363,998.10 and 220,892.60

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Solution

The fourth proportional to 242,665.40, 363,998.10 and 220,892.60 is: 331,338.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,665.40 : 363,998.10 = 220,892.60 : x
  2. Step 2: Convert to fraction form
    242,665.40/363,998.10 = 220,892.60/x
  3. Step 3: Cross multiply
    242,665.40x = 363,998.10 × 220,892.60
  4. Step 4: Simplify right side
    242,665.40x = 80,404,486,704.06
  5. Step 5: Solve for x
    x = 80,404,486,704.06/242,665.40
  6. Step 6: Final answer
    x = 331,338.90

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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.