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Finding the Fourth Proportional to 267,647.32, 401,121 and 109,690.84

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Solution

The fourth proportional to 267,647.32, 401,121 and 109,690.84 is: 164,392.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,647.32 : 401,121 = 109,690.84 : x
  2. Step 2: Convert to fraction form
    267,647.32/401,121 = 109,690.84/x
  3. Step 3: Cross multiply
    267,647.32x = 401,121 × 109,690.84
  4. Step 4: Simplify right side
    267,647.32x = 43,999,299,431.64
  5. Step 5: Solve for x
    x = 43,999,299,431.64/267,647.32
  6. Step 6: Final answer
    x = 164,392.83

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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.