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Finding the Fourth Proportional to 228,762.87, 343,187.48 and 86,650.71

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Solution

The fourth proportional to 228,762.87, 343,187.48 and 86,650.71 is: 129,992.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,762.87 : 343,187.48 = 86,650.71 : x
  2. Step 2: Convert to fraction form
    228,762.87/343,187.48 = 86,650.71/x
  3. Step 3: Cross multiply
    228,762.87x = 343,187.48 × 86,650.71
  4. Step 4: Simplify right side
    228,762.87x = 29,737,438,805.11
  5. Step 5: Solve for x
    x = 29,737,438,805.11/228,762.87
  6. Step 6: Final answer
    x = 129,992.42

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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.