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Finding the Fourth Proportional to 236,486, 326,347.92 and 129,057.84

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Solution

The fourth proportional to 236,486, 326,347.92 and 129,057.84 is: 178,098.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,486 : 326,347.92 = 129,057.84 : x
  2. Step 2: Convert to fraction form
    236,486/326,347.92 = 129,057.84/x
  3. Step 3: Cross multiply
    236,486x = 326,347.92 × 129,057.84
  4. Step 4: Simplify right side
    236,486x = 42,117,757,643.69
  5. Step 5: Solve for x
    x = 42,117,757,643.69/236,486
  6. Step 6: Final answer
    x = 178,098.31

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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.