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Finding the Fourth Proportional to 216,888.56, 325,223.70 and 90,496.04

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Solution

The fourth proportional to 216,888.56, 325,223.70 and 90,496.04 is: 135,698.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,888.56 : 325,223.70 = 90,496.04 : x
  2. Step 2: Convert to fraction form
    216,888.56/325,223.70 = 90,496.04/x
  3. Step 3: Cross multiply
    216,888.56x = 325,223.70 × 90,496.04
  4. Step 4: Simplify right side
    216,888.56x = 29,431,456,964.15
  5. Step 5: Solve for x
    x = 29,431,456,964.15/216,888.56
  6. Step 6: Final answer
    x = 135,698.52

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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.