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Finding the Fourth Proportional to 217,126.53, 325,720.71 and 67,379.76

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Solution

The fourth proportional to 217,126.53, 325,720.71 and 67,379.76 is: 101,079.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,126.53 : 325,720.71 = 67,379.76 : x
  2. Step 2: Convert to fraction form
    217,126.53/325,720.71 = 67,379.76/x
  3. Step 3: Cross multiply
    217,126.53x = 325,720.71 × 67,379.76
  4. Step 4: Simplify right side
    217,126.53x = 21,946,983,266.83
  5. Step 5: Solve for x
    x = 21,946,983,266.83/217,126.53
  6. Step 6: Final answer
    x = 101,079.23

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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.