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Finding the Third Proportional to 120,436.50 and 262,320.75

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Solution

The third proportional to 120,436.50 and 262,320.75 is: 571,356.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,436.50 : 262,320.75 = 262,320.75 : x
  2. Step 2: Convert to fraction form
    120,436.50/262,320.75 = 262,320.75/x
  3. Step 3: Cross multiply
    120,436.50x = 262,320.75 × 262,320.75
  4. Step 4: Simplify right side
    120,436.50x = 68,812,175,880.56
  5. Step 5: Solve for x
    x = 68,812,175,880.56/120,436.50
  6. Step 6: Final answer
    x = 571,356.49

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.