Home / 218,827.20-328,240.75-69,172.54

Finding the Fourth Proportional to 218,827.20, 328,240.75 and 69,172.54

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Solution

The fourth proportional to 218,827.20, 328,240.75 and 69,172.54 is: 103,758.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,827.20 : 328,240.75 = 69,172.54 : x
  2. Step 2: Convert to fraction form
    218,827.20/328,240.75 = 69,172.54/x
  3. Step 3: Cross multiply
    218,827.20x = 328,240.75 × 69,172.54
  4. Step 4: Simplify right side
    218,827.20x = 22,705,246,409.01
  5. Step 5: Solve for x
    x = 22,705,246,409.01/218,827.20
  6. Step 6: Final answer
    x = 103,758.79

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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.