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Finding the Fourth Proportional to 217,065.26, 325,424.02 and 103,155.90

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Solution

The fourth proportional to 217,065.26, 325,424.02 and 103,155.90 is: 154,651.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,065.26 : 325,424.02 = 103,155.90 : x
  2. Step 2: Convert to fraction form
    217,065.26/325,424.02 = 103,155.90/x
  3. Step 3: Cross multiply
    217,065.26x = 325,424.02 × 103,155.90
  4. Step 4: Simplify right side
    217,065.26x = 33,569,407,148.94
  5. Step 5: Solve for x
    x = 33,569,407,148.94/217,065.26
  6. Step 6: Final answer
    x = 154,651.22

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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.