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Finding the Third Proportional to 145,899 and 317,361

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Solution

The third proportional to 145,899 and 317,361 is: 690,326.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,899 : 317,361 = 317,361 : x
  2. Step 2: Convert to fraction form
    145,899/317,361 = 317,361/x
  3. Step 3: Cross multiply
    145,899x = 317,361 × 317,361
  4. Step 4: Simplify right side
    145,899x = 100,718,004,321
  5. Step 5: Solve for x
    x = 100,718,004,321/145,899
  6. Step 6: Final answer
    x = 690,326.90

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.