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Finding the Fourth Proportional to 235,326, 324,750.36 and 129,342

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Solution

The fourth proportional to 235,326, 324,750.36 and 129,342 is: 178,492.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,326 : 324,750.36 = 129,342 : x
  2. Step 2: Convert to fraction form
    235,326/324,750.36 = 129,342/x
  3. Step 3: Cross multiply
    235,326x = 324,750.36 × 129,342
  4. Step 4: Simplify right side
    235,326x = 42,003,861,063.12
  5. Step 5: Solve for x
    x = 42,003,861,063.12/235,326
  6. Step 6: Final answer
    x = 178,492.22

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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.