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Finding the Fourth Proportional to 203,348.48, 304,964.39 and 78,660.32

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Solution

The fourth proportional to 203,348.48, 304,964.39 and 78,660.32 is: 117,967.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,348.48 : 304,964.39 = 78,660.32 : x
  2. Step 2: Convert to fraction form
    203,348.48/304,964.39 = 78,660.32/x
  3. Step 3: Cross multiply
    203,348.48x = 304,964.39 × 78,660.32
  4. Step 4: Simplify right side
    203,348.48x = 23,988,595,177.83
  5. Step 5: Solve for x
    x = 23,988,595,177.83/203,348.48
  6. Step 6: Final answer
    x = 117,967.91

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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.