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Finding the Fourth Proportional to 223,617.60, 335,361.60 and 81,446.40

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Solution

The fourth proportional to 223,617.60, 335,361.60 and 81,446.40 is: 122,146.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,617.60 : 335,361.60 = 81,446.40 : x
  2. Step 2: Convert to fraction form
    223,617.60/335,361.60 = 81,446.40/x
  3. Step 3: Cross multiply
    223,617.60x = 335,361.60 × 81,446.40
  4. Step 4: Simplify right side
    223,617.60x = 27,313,995,018.24
  5. Step 5: Solve for x
    x = 27,313,995,018.24/223,617.60
  6. Step 6: Final answer
    x = 122,146.00

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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.