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Finding the Fourth Proportional to 267,718.85, 401,579.66 and 90,227.40

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Solution

The fourth proportional to 267,718.85, 401,579.66 and 90,227.40 is: 135,341.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,718.85 : 401,579.66 = 90,227.40 : x
  2. Step 2: Convert to fraction form
    267,718.85/401,579.66 = 90,227.40/x
  3. Step 3: Cross multiply
    267,718.85x = 401,579.66 × 90,227.40
  4. Step 4: Simplify right side
    267,718.85x = 36,233,488,904.73
  5. Step 5: Solve for x
    x = 36,233,488,904.73/267,718.85
  6. Step 6: Final answer
    x = 135,341.57

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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.