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Finding the Third Proportional to 289,555.50 and 440,236.50

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Solution

The third proportional to 289,555.50 and 440,236.50 is: 669,329.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,555.50 : 440,236.50 = 440,236.50 : x
  2. Step 2: Convert to fraction form
    289,555.50/440,236.50 = 440,236.50/x
  3. Step 3: Cross multiply
    289,555.50x = 440,236.50 × 440,236.50
  4. Step 4: Simplify right side
    289,555.50x = 193,808,175,932.25
  5. Step 5: Solve for x
    x = 193,808,175,932.25/289,555.50
  6. Step 6: Final answer
    x = 669,329.98

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.