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Finding the Third Proportional to 174,980 and 258,780

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Solution

The third proportional to 174,980 and 258,780 is: 382,712.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,980 : 258,780 = 258,780 : x
  2. Step 2: Convert to fraction form
    174,980/258,780 = 258,780/x
  3. Step 3: Cross multiply
    174,980x = 258,780 × 258,780
  4. Step 4: Simplify right side
    174,980x = 66,967,088,400
  5. Step 5: Solve for x
    x = 66,967,088,400/174,980
  6. Step 6: Final answer
    x = 382,712.82

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.