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Finding the Fourth Proportional to 217,047.39, 325,521.87 and 76,806.01

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Solution

The fourth proportional to 217,047.39, 325,521.87 and 76,806.01 is: 115,191.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,047.39 : 325,521.87 = 76,806.01 : x
  2. Step 2: Convert to fraction form
    217,047.39/325,521.87 = 76,806.01/x
  3. Step 3: Cross multiply
    217,047.39x = 325,521.87 × 76,806.01
  4. Step 4: Simplify right side
    217,047.39x = 25,002,036,002.44
  5. Step 5: Solve for x
    x = 25,002,036,002.44/217,047.39
  6. Step 6: Final answer
    x = 115,191.60

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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.