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Finding the Fourth Proportional to 276,808.39, 381,995.56 and 149,483.98

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Solution

The fourth proportional to 276,808.39, 381,995.56 and 149,483.98 is: 206,287.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,808.39 : 381,995.56 = 149,483.98 : x
  2. Step 2: Convert to fraction form
    276,808.39/381,995.56 = 149,483.98/x
  3. Step 3: Cross multiply
    276,808.39x = 381,995.56 × 149,483.98
  4. Step 4: Simplify right side
    276,808.39x = 57,102,217,315.48
  5. Step 5: Solve for x
    x = 57,102,217,315.48/276,808.39
  6. Step 6: Final answer
    x = 206,287.89

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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.