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Finding the Fourth Proportional to 217,802.88, 326,619.72 and 84,665.52

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Solution

The fourth proportional to 217,802.88, 326,619.72 and 84,665.52 is: 126,965.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,802.88 : 326,619.72 = 84,665.52 : x
  2. Step 2: Convert to fraction form
    217,802.88/326,619.72 = 84,665.52/x
  3. Step 3: Cross multiply
    217,802.88x = 326,619.72 × 84,665.52
  4. Step 4: Simplify right side
    217,802.88x = 27,653,428,436.05
  5. Step 5: Solve for x
    x = 27,653,428,436.05/217,802.88
  6. Step 6: Final answer
    x = 126,965.39

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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.