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Finding the Third Proportional to 258,752 and 392,505

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Solution

The third proportional to 258,752 and 392,505 is: 595,397.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,752 : 392,505 = 392,505 : x
  2. Step 2: Convert to fraction form
    258,752/392,505 = 392,505/x
  3. Step 3: Cross multiply
    258,752x = 392,505 × 392,505
  4. Step 4: Simplify right side
    258,752x = 154,060,175,025
  5. Step 5: Solve for x
    x = 154,060,175,025/258,752
  6. Step 6: Final answer
    x = 595,397.04

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.