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Finding the Third Proportional to 316,067 and 489,076.50

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Solution

The third proportional to 316,067 and 489,076.50 is: 756,788.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,067 : 489,076.50 = 489,076.50 : x
  2. Step 2: Convert to fraction form
    316,067/489,076.50 = 489,076.50/x
  3. Step 3: Cross multiply
    316,067x = 489,076.50 × 489,076.50
  4. Step 4: Simplify right side
    316,067x = 239,195,822,852.25
  5. Step 5: Solve for x
    x = 239,195,822,852.25/316,067
  6. Step 6: Final answer
    x = 756,788.35

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.