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Finding the Fourth Proportional to 276,689.11, 381,845.16 and 169,225.39

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Solution

The fourth proportional to 276,689.11, 381,845.16 and 169,225.39 is: 233,539.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,689.11 : 381,845.16 = 169,225.39 : x
  2. Step 2: Convert to fraction form
    276,689.11/381,845.16 = 169,225.39/x
  3. Step 3: Cross multiply
    276,689.11x = 381,845.16 × 169,225.39
  4. Step 4: Simplify right side
    276,689.11x = 64,617,896,120.61
  5. Step 5: Solve for x
    x = 64,617,896,120.61/276,689.11
  6. Step 6: Final answer
    x = 233,539.72

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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.