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Finding the Fourth Proportional to 218,969.34, 328,453.29 and 52,757.34

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Solution

The fourth proportional to 218,969.34, 328,453.29 and 52,757.34 is: 79,135.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,969.34 : 328,453.29 = 52,757.34 : x
  2. Step 2: Convert to fraction form
    218,969.34/328,453.29 = 52,757.34/x
  3. Step 3: Cross multiply
    218,969.34x = 328,453.29 × 52,757.34
  4. Step 4: Simplify right side
    218,969.34x = 17,328,321,894.65
  5. Step 5: Solve for x
    x = 17,328,321,894.65/218,969.34
  6. Step 6: Final answer
    x = 79,135.84

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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.