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Finding the Third Proportional to 257,615 and 564,438

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Solution

The third proportional to 257,615 and 564,438 is: 1,236,691.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,615 : 564,438 = 564,438 : x
  2. Step 2: Convert to fraction form
    257,615/564,438 = 564,438/x
  3. Step 3: Cross multiply
    257,615x = 564,438 × 564,438
  4. Step 4: Simplify right side
    257,615x = 318,590,255,844
  5. Step 5: Solve for x
    x = 318,590,255,844/257,615
  6. Step 6: Final answer
    x = 1,236,691.40

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.