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Finding the Fourth Proportional to 215,191.50, 322,839.09 and 67,447.50

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Solution

The fourth proportional to 215,191.50, 322,839.09 and 67,447.50 is: 101,187.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,191.50 : 322,839.09 = 67,447.50 : x
  2. Step 2: Convert to fraction form
    215,191.50/322,839.09 = 67,447.50/x
  3. Step 3: Cross multiply
    215,191.50x = 322,839.09 × 67,447.50
  4. Step 4: Simplify right side
    215,191.50x = 21,774,689,522.78
  5. Step 5: Solve for x
    x = 21,774,689,522.78/215,191.50
  6. Step 6: Final answer
    x = 101,187.50

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1.5x scale

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.