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Finding the Third Proportional to 245,720 and 346,260

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Solution

The third proportional to 245,720 and 346,260 is: 487,937.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,720 : 346,260 = 346,260 : x
  2. Step 2: Convert to fraction form
    245,720/346,260 = 346,260/x
  3. Step 3: Cross multiply
    245,720x = 346,260 × 346,260
  4. Step 4: Simplify right side
    245,720x = 119,895,987,600
  5. Step 5: Solve for x
    x = 119,895,987,600/245,720
  6. Step 6: Final answer
    x = 487,937.44

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.