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Finding the Fourth Proportional to 216,753.93, 325,224.29 and 90,419.06

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Solution

The fourth proportional to 216,753.93, 325,224.29 and 90,419.06 is: 135,667.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,753.93 : 325,224.29 = 90,419.06 : x
  2. Step 2: Convert to fraction form
    216,753.93/325,224.29 = 90,419.06/x
  3. Step 3: Cross multiply
    216,753.93x = 325,224.29 × 90,419.06
  4. Step 4: Simplify right side
    216,753.93x = 29,406,472,512.75
  5. Step 5: Solve for x
    x = 29,406,472,512.75/216,753.93
  6. Step 6: Final answer
    x = 135,667.54

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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.