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Finding the Fourth Proportional to 217,799.25, 326,711.19 and 77,557.89

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Solution

The fourth proportional to 217,799.25, 326,711.19 and 77,557.89 is: 116,341.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,799.25 : 326,711.19 = 77,557.89 : x
  2. Step 2: Convert to fraction form
    217,799.25/326,711.19 = 77,557.89/x
  3. Step 3: Cross multiply
    217,799.25x = 326,711.19 × 77,557.89
  4. Step 4: Simplify right side
    217,799.25x = 25,339,030,535.79
  5. Step 5: Solve for x
    x = 25,339,030,535.79/217,799.25
  6. Step 6: Final answer
    x = 116,341.22

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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.