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Finding the Fourth Proportional to 215,199.50, 322,851.10 and 67,455.50

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Solution

The fourth proportional to 215,199.50, 322,851.10 and 67,455.50 is: 101,199.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,199.50 : 322,851.10 = 67,455.50 : x
  2. Step 2: Convert to fraction form
    215,199.50/322,851.10 = 67,455.50/x
  3. Step 3: Cross multiply
    215,199.50x = 322,851.10 × 67,455.50
  4. Step 4: Simplify right side
    215,199.50x = 21,778,082,376.05
  5. Step 5: Solve for x
    x = 21,778,082,376.05/215,199.50
  6. Step 6: Final answer
    x = 101,199.50

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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.