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Finding the Fourth Proportional to 322,056.71, 485,399.87 and 277,614.44

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Solution

The fourth proportional to 322,056.71, 485,399.87 and 277,614.44 is: 418,417.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,056.71 : 485,399.87 = 277,614.44 : x
  2. Step 2: Convert to fraction form
    322,056.71/485,399.87 = 277,614.44/x
  3. Step 3: Cross multiply
    322,056.71x = 485,399.87 × 277,614.44
  4. Step 4: Simplify right side
    322,056.71x = 134,754,011,351.56
  5. Step 5: Solve for x
    x = 134,754,011,351.56/322,056.71
  6. Step 6: Final answer
    x = 418,417.03

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.