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Finding the Third Proportional to 179,112 and 391,440

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Solution

The third proportional to 179,112 and 391,440 is: 855,471.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,112 : 391,440 = 391,440 : x
  2. Step 2: Convert to fraction form
    179,112/391,440 = 391,440/x
  3. Step 3: Cross multiply
    179,112x = 391,440 × 391,440
  4. Step 4: Simplify right side
    179,112x = 153,225,273,600
  5. Step 5: Solve for x
    x = 153,225,273,600/179,112
  6. Step 6: Final answer
    x = 855,471.85

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.