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Finding the Fourth Proportional to 276,612.84, 381,720.60 and 155,753.64

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Solution

The fourth proportional to 276,612.84, 381,720.60 and 155,753.64 is: 214,937.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,612.84 : 381,720.60 = 155,753.64 : x
  2. Step 2: Convert to fraction form
    276,612.84/381,720.60 = 155,753.64/x
  3. Step 3: Cross multiply
    276,612.84x = 381,720.60 × 155,753.64
  4. Step 4: Simplify right side
    276,612.84x = 59,454,372,912.98
  5. Step 5: Solve for x
    x = 59,454,372,912.98/276,612.84
  6. Step 6: Final answer
    x = 214,937.14

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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.