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Finding the Third Proportional to 100,638 and 217,041.19

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Solution

The third proportional to 100,638 and 217,041.19 is: 468,082.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,638 : 217,041.19 = 217,041.19 : x
  2. Step 2: Convert to fraction form
    100,638/217,041.19 = 217,041.19/x
  3. Step 3: Cross multiply
    100,638x = 217,041.19 × 217,041.19
  4. Step 4: Simplify right side
    100,638x = 47,106,877,071.41
  5. Step 5: Solve for x
    x = 47,106,877,071.41/100,638
  6. Step 6: Final answer
    x = 468,082.40

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.