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Finding the Third Proportional to 238,312 and 515,340

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Solution

The third proportional to 238,312 and 515,340 is: 1,114,401.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,312 : 515,340 = 515,340 : x
  2. Step 2: Convert to fraction form
    238,312/515,340 = 515,340/x
  3. Step 3: Cross multiply
    238,312x = 515,340 × 515,340
  4. Step 4: Simplify right side
    238,312x = 265,575,315,600
  5. Step 5: Solve for x
    x = 265,575,315,600/238,312
  6. Step 6: Final answer
    x = 1,114,401.77

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.