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Finding the Fourth Proportional to 228,757.37, 343,179.23 and 86,645.21

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Solution

The fourth proportional to 228,757.37, 343,179.23 and 86,645.21 is: 129,984.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,757.37 : 343,179.23 = 86,645.21 : x
  2. Step 2: Convert to fraction form
    228,757.37/343,179.23 = 86,645.21/x
  3. Step 3: Cross multiply
    228,757.37x = 343,179.23 × 86,645.21
  4. Step 4: Simplify right side
    228,757.37x = 29,734,834,301.87
  5. Step 5: Solve for x
    x = 29,734,834,301.87/228,757.37
  6. Step 6: Final answer
    x = 129,984.16

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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.