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Finding the Fourth Proportional to 263,737.77, 395,668.89 and 86,244.09

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Solution

The fourth proportional to 263,737.77, 395,668.89 and 86,244.09 is: 129,386.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,737.77 : 395,668.89 = 86,244.09 : x
  2. Step 2: Convert to fraction form
    263,737.77/395,668.89 = 86,244.09/x
  3. Step 3: Cross multiply
    263,737.77x = 395,668.89 × 86,244.09
  4. Step 4: Simplify right side
    263,737.77x = 34,124,103,359.36
  5. Step 5: Solve for x
    x = 34,124,103,359.36/263,737.77
  6. Step 6: Final answer
    x = 129,386.49

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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.