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Finding the Third Proportional to 306,405 and 457,753.50

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Solution

The third proportional to 306,405 and 457,753.50 is: 683,860.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,405 : 457,753.50 = 457,753.50 : x
  2. Step 2: Convert to fraction form
    306,405/457,753.50 = 457,753.50/x
  3. Step 3: Cross multiply
    306,405x = 457,753.50 × 457,753.50
  4. Step 4: Simplify right side
    306,405x = 209,538,266,762.25
  5. Step 5: Solve for x
    x = 209,538,266,762.25/306,405
  6. Step 6: Final answer
    x = 683,860.47

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.