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Finding the Fourth Proportional to 235,026, 324,335.88 and 129,042

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Solution

The fourth proportional to 235,026, 324,335.88 and 129,042 is: 178,077.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,026 : 324,335.88 = 129,042 : x
  2. Step 2: Convert to fraction form
    235,026/324,335.88 = 129,042/x
  3. Step 3: Cross multiply
    235,026x = 324,335.88 × 129,042
  4. Step 4: Simplify right side
    235,026x = 41,852,950,626.96
  5. Step 5: Solve for x
    x = 41,852,950,626.96/235,026
  6. Step 6: Final answer
    x = 178,077.96

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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.