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Finding the Third Proportional to 311,340 and 474,786

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Solution

The third proportional to 311,340 and 474,786 is: 724,037.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,340 : 474,786 = 474,786 : x
  2. Step 2: Convert to fraction form
    311,340/474,786 = 474,786/x
  3. Step 3: Cross multiply
    311,340x = 474,786 × 474,786
  4. Step 4: Simplify right side
    311,340x = 225,421,745,796
  5. Step 5: Solve for x
    x = 225,421,745,796/311,340
  6. Step 6: Final answer
    x = 724,037.21

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.