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Finding the Fourth Proportional to 218,945.43, 328,380.48 and 61,136.37

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Solution

The fourth proportional to 218,945.43, 328,380.48 and 61,136.37 is: 91,694.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,945.43 : 328,380.48 = 61,136.37 : x
  2. Step 2: Convert to fraction form
    218,945.43/328,380.48 = 61,136.37/x
  3. Step 3: Cross multiply
    218,945.43x = 328,380.48 × 61,136.37
  4. Step 4: Simplify right side
    218,945.43x = 20,075,990,526.06
  5. Step 5: Solve for x
    x = 20,075,990,526.06/218,945.43
  6. Step 6: Final answer
    x = 91,694.04

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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.