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Finding the Third Proportional to 257,480 and 384,757

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Solution

The third proportional to 257,480 and 384,757 is: 574,949.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,480 : 384,757 = 384,757 : x
  2. Step 2: Convert to fraction form
    257,480/384,757 = 384,757/x
  3. Step 3: Cross multiply
    257,480x = 384,757 × 384,757
  4. Step 4: Simplify right side
    257,480x = 148,037,949,049
  5. Step 5: Solve for x
    x = 148,037,949,049/257,480
  6. Step 6: Final answer
    x = 574,949.31

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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.