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Finding the Third Proportional to 305,724 and 440,356

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Solution

The third proportional to 305,724 and 440,356 is: 634,276.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,724 : 440,356 = 440,356 : x
  2. Step 2: Convert to fraction form
    305,724/440,356 = 440,356/x
  3. Step 3: Cross multiply
    305,724x = 440,356 × 440,356
  4. Step 4: Simplify right side
    305,724x = 193,913,406,736
  5. Step 5: Solve for x
    x = 193,913,406,736/305,724
  6. Step 6: Final answer
    x = 634,276.04

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.