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Finding the Third Proportional to 257,019.75 and 384,048.75

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Solution

The third proportional to 257,019.75 and 384,048.75 is: 573,860.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,019.75 : 384,048.75 = 384,048.75 : x
  2. Step 2: Convert to fraction form
    257,019.75/384,048.75 = 384,048.75/x
  3. Step 3: Cross multiply
    257,019.75x = 384,048.75 × 384,048.75
  4. Step 4: Simplify right side
    257,019.75x = 147,493,442,376.56
  5. Step 5: Solve for x
    x = 147,493,442,376.56/257,019.75
  6. Step 6: Final answer
    x = 573,860.34

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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.