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Finding the Fourth Proportional to 223,612.60, 335,354.10 and 81,441.40

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Solution

The fourth proportional to 223,612.60, 335,354.10 and 81,441.40 is: 122,138.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,612.60 : 335,354.10 = 81,441.40 : x
  2. Step 2: Convert to fraction form
    223,612.60/335,354.10 = 81,441.40/x
  3. Step 3: Cross multiply
    223,612.60x = 335,354.10 × 81,441.40
  4. Step 4: Simplify right side
    223,612.60x = 27,311,707,399.74
  5. Step 5: Solve for x
    x = 27,311,707,399.74/223,612.60
  6. Step 6: Final answer
    x = 122,138.50

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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.