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Finding the Third Proportional to 305,865 and 449,872.50

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Solution

The third proportional to 305,865 and 449,872.50 is: 661,681.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,865 : 449,872.50 = 449,872.50 : x
  2. Step 2: Convert to fraction form
    305,865/449,872.50 = 449,872.50/x
  3. Step 3: Cross multiply
    305,865x = 449,872.50 × 449,872.50
  4. Step 4: Simplify right side
    305,865x = 202,385,266,256.25
  5. Step 5: Solve for x
    x = 202,385,266,256.25/305,865
  6. Step 6: Final answer
    x = 661,681.68

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.