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Finding the Fourth Proportional to 263,562.38, 395,367.87 and 86,070.32

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Solution

The fourth proportional to 263,562.38, 395,367.87 and 86,070.32 is: 129,113.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,562.38 : 395,367.87 = 86,070.32 : x
  2. Step 2: Convert to fraction form
    263,562.38/395,367.87 = 86,070.32/x
  3. Step 3: Cross multiply
    263,562.38x = 395,367.87 × 86,070.32
  4. Step 4: Simplify right side
    263,562.38x = 34,029,439,088.62
  5. Step 5: Solve for x
    x = 34,029,439,088.62/263,562.38
  6. Step 6: Final answer
    x = 129,113.42

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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.