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Finding the Fourth Proportional to 276,573.59, 381,708.56 and 161,887.31

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Solution

The fourth proportional to 276,573.59, 381,708.56 and 161,887.31 is: 223,426.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,573.59 : 381,708.56 = 161,887.31 : x
  2. Step 2: Convert to fraction form
    276,573.59/381,708.56 = 161,887.31/x
  3. Step 3: Cross multiply
    276,573.59x = 381,708.56 × 161,887.31
  4. Step 4: Simplify right side
    276,573.59x = 61,793,771,172.94
  5. Step 5: Solve for x
    x = 61,793,771,172.94/276,573.59
  6. Step 6: Final answer
    x = 223,426.15

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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.