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Finding the Fourth Proportional to 273,775.79, 410,921.30 and 138,936.67

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Solution

The fourth proportional to 273,775.79, 410,921.30 and 138,936.67 is: 208,535.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,775.79 : 410,921.30 = 138,936.67 : x
  2. Step 2: Convert to fraction form
    273,775.79/410,921.30 = 138,936.67/x
  3. Step 3: Cross multiply
    273,775.79x = 410,921.30 × 138,936.67
  4. Step 4: Simplify right side
    273,775.79x = 57,092,034,304.78
  5. Step 5: Solve for x
    x = 57,092,034,304.78/273,775.79
  6. Step 6: Final answer
    x = 208,535.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.