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Finding the Fourth Proportional to 213,072.52, 319,525.71 and 79,880.17

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Solution

The fourth proportional to 213,072.52, 319,525.71 and 79,880.17 is: 119,789.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,072.52 : 319,525.71 = 79,880.17 : x
  2. Step 2: Convert to fraction form
    213,072.52/319,525.71 = 79,880.17/x
  3. Step 3: Cross multiply
    213,072.52x = 319,525.71 × 79,880.17
  4. Step 4: Simplify right side
    213,072.52x = 25,523,768,034.17
  5. Step 5: Solve for x
    x = 25,523,768,034.17/213,072.52
  6. Step 6: Final answer
    x = 119,789.11

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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.