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Finding the Third Proportional to 161,868 and 355,854

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Solution

The third proportional to 161,868 and 355,854 is: 782,316.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,868 : 355,854 = 355,854 : x
  2. Step 2: Convert to fraction form
    161,868/355,854 = 355,854/x
  3. Step 3: Cross multiply
    161,868x = 355,854 × 355,854
  4. Step 4: Simplify right side
    161,868x = 126,632,069,316
  5. Step 5: Solve for x
    x = 126,632,069,316/161,868
  6. Step 6: Final answer
    x = 782,316.88

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.