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Finding the Third Proportional to 348,340 and 521,158

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Solution

The third proportional to 348,340 and 521,158 is: 779,714.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,340 : 521,158 = 521,158 : x
  2. Step 2: Convert to fraction form
    348,340/521,158 = 521,158/x
  3. Step 3: Cross multiply
    348,340x = 521,158 × 521,158
  4. Step 4: Simplify right side
    348,340x = 271,605,660,964
  5. Step 5: Solve for x
    x = 271,605,660,964/348,340
  6. Step 6: Final answer
    x = 779,714.25

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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.