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Finding the Fourth Proportional to 263,369.73, 395,117.49 and 85,876.92

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Solution

The fourth proportional to 263,369.73, 395,117.49 and 85,876.92 is: 128,835.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,369.73 : 395,117.49 = 85,876.92 : x
  2. Step 2: Convert to fraction form
    263,369.73/395,117.49 = 85,876.92/x
  3. Step 3: Cross multiply
    263,369.73x = 395,117.49 × 85,876.92
  4. Step 4: Simplify right side
    263,369.73x = 33,931,473,079.33
  5. Step 5: Solve for x
    x = 33,931,473,079.33/263,369.73
  6. Step 6: Final answer
    x = 128,835.89

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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.