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Finding the Fourth Proportional to 267,642.72, 401,464.79 and 90,274.19

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Solution

The fourth proportional to 267,642.72, 401,464.79 and 90,274.19 is: 135,411.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,642.72 : 401,464.79 = 90,274.19 : x
  2. Step 2: Convert to fraction form
    267,642.72/401,464.79 = 90,274.19/x
  3. Step 3: Cross multiply
    267,642.72x = 401,464.79 × 90,274.19
  4. Step 4: Simplify right side
    267,642.72x = 36,241,906,272.08
  5. Step 5: Solve for x
    x = 36,241,906,272.08/267,642.72
  6. Step 6: Final answer
    x = 135,411.52

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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.