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Finding the Fourth Proportional to 218,490.39, 327,735.57 and 60,720.21

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Solution

The fourth proportional to 218,490.39, 327,735.57 and 60,720.21 is: 91,080.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,490.39 : 327,735.57 = 60,720.21 : x
  2. Step 2: Convert to fraction form
    218,490.39/327,735.57 = 60,720.21/x
  3. Step 3: Cross multiply
    218,490.39x = 327,735.57 × 60,720.21
  4. Step 4: Simplify right side
    218,490.39x = 19,900,172,634.87
  5. Step 5: Solve for x
    x = 19,900,172,634.87/218,490.39
  6. Step 6: Final answer
    x = 91,080.31

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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.