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Finding the Fourth Proportional to 276,640.92, 381,772.08 and 169,209

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Solution

The fourth proportional to 276,640.92, 381,772.08 and 169,209 is: 233,513.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,640.92 : 381,772.08 = 169,209 : x
  2. Step 2: Convert to fraction form
    276,640.92/381,772.08 = 169,209/x
  3. Step 3: Cross multiply
    276,640.92x = 381,772.08 × 169,209
  4. Step 4: Simplify right side
    276,640.92x = 64,599,271,884.72
  5. Step 5: Solve for x
    x = 64,599,271,884.72/276,640.92
  6. Step 6: Final answer
    x = 233,513.07

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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.