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Finding the Fourth Proportional to 236,782.89, 326,765.21 and 129,359.88

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Solution

The fourth proportional to 236,782.89, 326,765.21 and 129,359.88 is: 178,519.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,782.89 : 326,765.21 = 129,359.88 : x
  2. Step 2: Convert to fraction form
    236,782.89/326,765.21 = 129,359.88/x
  3. Step 3: Cross multiply
    236,782.89x = 326,765.21 × 129,359.88
  4. Step 4: Simplify right side
    236,782.89x = 42,270,307,706.98
  5. Step 5: Solve for x
    x = 42,270,307,706.98/236,782.89
  6. Step 6: Final answer
    x = 178,519.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.