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Finding the Fourth Proportional to 353,969.28, 530,936.64 and 132,336

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Solution

The fourth proportional to 353,969.28, 530,936.64 and 132,336 is: 198,497.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,969.28 : 530,936.64 = 132,336 : x
  2. Step 2: Convert to fraction form
    353,969.28/530,936.64 = 132,336/x
  3. Step 3: Cross multiply
    353,969.28x = 530,936.64 × 132,336
  4. Step 4: Simplify right side
    353,969.28x = 70,262,031,191.04
  5. Step 5: Solve for x
    x = 70,262,031,191.04/353,969.28
  6. Step 6: Final answer
    x = 198,497.54

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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.