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Finding the Third Proportional to 260,316 and 389,448

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Solution

The third proportional to 260,316 and 389,448 is: 582,637.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,316 : 389,448 = 389,448 : x
  2. Step 2: Convert to fraction form
    260,316/389,448 = 389,448/x
  3. Step 3: Cross multiply
    260,316x = 389,448 × 389,448
  4. Step 4: Simplify right side
    260,316x = 151,669,744,704
  5. Step 5: Solve for x
    x = 151,669,744,704/260,316
  6. Step 6: Final answer
    x = 582,637.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.