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Finding the Fourth Proportional to 222,489.60, 333,669.60 and 80,318.40

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Solution

The fourth proportional to 222,489.60, 333,669.60 and 80,318.40 is: 120,454.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,489.60 : 333,669.60 = 80,318.40 : x
  2. Step 2: Convert to fraction form
    222,489.60/333,669.60 = 80,318.40/x
  3. Step 3: Cross multiply
    222,489.60x = 333,669.60 × 80,318.40
  4. Step 4: Simplify right side
    222,489.60x = 26,799,808,400.64
  5. Step 5: Solve for x
    x = 26,799,808,400.64/222,489.60
  6. Step 6: Final answer
    x = 120,454.21

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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.