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Finding the Third Proportional to 331,443 and 518,482.50

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Solution

The third proportional to 331,443 and 518,482.50 is: 811,071.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,443 : 518,482.50 = 518,482.50 : x
  2. Step 2: Convert to fraction form
    331,443/518,482.50 = 518,482.50/x
  3. Step 3: Cross multiply
    331,443x = 518,482.50 × 518,482.50
  4. Step 4: Simplify right side
    331,443x = 268,824,102,806.25
  5. Step 5: Solve for x
    x = 268,824,102,806.25/331,443
  6. Step 6: Final answer
    x = 811,071.90

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.