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Finding the Fourth Proportional to 203,031.73, 304,376.33 and 127,986.48

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Solution

The fourth proportional to 203,031.73, 304,376.33 and 127,986.48 is: 191,871.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,031.73 : 304,376.33 = 127,986.48 : x
  2. Step 2: Convert to fraction form
    203,031.73/304,376.33 = 127,986.48/x
  3. Step 3: Cross multiply
    203,031.73x = 304,376.33 × 127,986.48
  4. Step 4: Simplify right side
    203,031.73x = 38,956,055,391.98
  5. Step 5: Solve for x
    x = 38,956,055,391.98/203,031.73
  6. Step 6: Final answer
    x = 191,871.76

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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.