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Finding the Third Proportional to 162,639.75 and 391,332

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Solution

The third proportional to 162,639.75 and 391,332 is: 941,594.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,639.75 : 391,332 = 391,332 : x
  2. Step 2: Convert to fraction form
    162,639.75/391,332 = 391,332/x
  3. Step 3: Cross multiply
    162,639.75x = 391,332 × 391,332
  4. Step 4: Simplify right side
    162,639.75x = 153,140,734,224
  5. Step 5: Solve for x
    x = 153,140,734,224/162,639.75
  6. Step 6: Final answer
    x = 941,594.75

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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.