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Finding the Third Proportional to 261,090 and 393,714

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Solution

The third proportional to 261,090 and 393,714 is: 593,706.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,090 : 393,714 = 393,714 : x
  2. Step 2: Convert to fraction form
    261,090/393,714 = 393,714/x
  3. Step 3: Cross multiply
    261,090x = 393,714 × 393,714
  4. Step 4: Simplify right side
    261,090x = 155,010,713,796
  5. Step 5: Solve for x
    x = 155,010,713,796/261,090
  6. Step 6: Final answer
    x = 593,706.05

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.