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Finding the Third Proportional to 217,739 and 342,160

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Solution

The third proportional to 217,739 and 342,160 is: 537,677.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,739 : 342,160 = 342,160 : x
  2. Step 2: Convert to fraction form
    217,739/342,160 = 342,160/x
  3. Step 3: Cross multiply
    217,739x = 342,160 × 342,160
  4. Step 4: Simplify right side
    217,739x = 117,073,465,600
  5. Step 5: Solve for x
    x = 117,073,465,600/217,739
  6. Step 6: Final answer
    x = 537,677.98

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.