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Finding the Third Proportional to 247,788 and 393,835.50

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Solution

The third proportional to 247,788 and 393,835.50 is: 625,964.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,788 : 393,835.50 = 393,835.50 : x
  2. Step 2: Convert to fraction form
    247,788/393,835.50 = 393,835.50/x
  3. Step 3: Cross multiply
    247,788x = 393,835.50 × 393,835.50
  4. Step 4: Simplify right side
    247,788x = 155,106,401,060.25
  5. Step 5: Solve for x
    x = 155,106,401,060.25/247,788
  6. Step 6: Final answer
    x = 625,964.13

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.