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Finding the Third Proportional to 318,682.50 and 489,165.75

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Solution

The third proportional to 318,682.50 and 489,165.75 is: 750,851.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,682.50 : 489,165.75 = 489,165.75 : x
  2. Step 2: Convert to fraction form
    318,682.50/489,165.75 = 489,165.75/x
  3. Step 3: Cross multiply
    318,682.50x = 489,165.75 × 489,165.75
  4. Step 4: Simplify right side
    318,682.50x = 239,283,130,973.06
  5. Step 5: Solve for x
    x = 239,283,130,973.06/318,682.50
  6. Step 6: Final answer
    x = 750,851.18

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.