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Finding the Fourth Proportional to 223,410.95, 335,355.17 and 90,378.17

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Solution

The fourth proportional to 223,410.95, 335,355.17 and 90,378.17 is: 135,663.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,410.95 : 335,355.17 = 90,378.17 : x
  2. Step 2: Convert to fraction form
    223,410.95/335,355.17 = 90,378.17/x
  3. Step 3: Cross multiply
    223,410.95x = 335,355.17 × 90,378.17
  4. Step 4: Simplify right side
    223,410.95x = 30,308,784,435.97
  5. Step 5: Solve for x
    x = 30,308,784,435.97/223,410.95
  6. Step 6: Final answer
    x = 135,663.83

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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.