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Finding the Fourth Proportional to 217,424.70, 325,975.05 and 112,319.10

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Solution

The fourth proportional to 217,424.70, 325,975.05 and 112,319.10 is: 168,394.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,424.70 : 325,975.05 = 112,319.10 : x
  2. Step 2: Convert to fraction form
    217,424.70/325,975.05 = 112,319.10/x
  3. Step 3: Cross multiply
    217,424.70x = 325,975.05 × 112,319.10
  4. Step 4: Simplify right side
    217,424.70x = 36,613,224,238.46
  5. Step 5: Solve for x
    x = 36,613,224,238.46/217,424.70
  6. Step 6: Final answer
    x = 168,394.96

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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.