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Finding the Fourth Proportional to 267,868.68, 369,690.66 and 154,689

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Solution

The fourth proportional to 267,868.68, 369,690.66 and 154,689 is: 213,489.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,868.68 : 369,690.66 = 154,689 : x
  2. Step 2: Convert to fraction form
    267,868.68/369,690.66 = 154,689/x
  3. Step 3: Cross multiply
    267,868.68x = 369,690.66 × 154,689
  4. Step 4: Simplify right side
    267,868.68x = 57,187,078,504.74
  5. Step 5: Solve for x
    x = 57,187,078,504.74/267,868.68
  6. Step 6: Final answer
    x = 213,489.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.