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Finding the Third Proportional to 162,639 and 391,329.75

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Solution

The third proportional to 162,639 and 391,329.75 is: 941,588.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,639 : 391,329.75 = 391,329.75 : x
  2. Step 2: Convert to fraction form
    162,639/391,329.75 = 391,329.75/x
  3. Step 3: Cross multiply
    162,639x = 391,329.75 × 391,329.75
  4. Step 4: Simplify right side
    162,639x = 153,138,973,235.06
  5. Step 5: Solve for x
    x = 153,138,973,235.06/162,639
  6. Step 6: Final answer
    x = 941,588.26

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Why These Related Problems?

These problems maintain the same ratio (2.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.