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Finding the Fourth Proportional to 216,851.72, 325,277.42 and 90,551.43

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Solution

The fourth proportional to 216,851.72, 325,277.42 and 90,551.43 is: 135,827.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,851.72 : 325,277.42 = 90,551.43 : x
  2. Step 2: Convert to fraction form
    216,851.72/325,277.42 = 90,551.43/x
  3. Step 3: Cross multiply
    216,851.72x = 325,277.42 × 90,551.43
  4. Step 4: Simplify right side
    216,851.72x = 29,454,335,074.95
  5. Step 5: Solve for x
    x = 29,454,335,074.95/216,851.72
  6. Step 6: Final answer
    x = 135,827.08

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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.