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Finding the Third Proportional to 257,580 and 553,248

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Solution

The third proportional to 257,580 and 553,248 is: 1,188,304.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,580 : 553,248 = 553,248 : x
  2. Step 2: Convert to fraction form
    257,580/553,248 = 553,248/x
  3. Step 3: Cross multiply
    257,580x = 553,248 × 553,248
  4. Step 4: Simplify right side
    257,580x = 306,083,349,504
  5. Step 5: Solve for x
    x = 306,083,349,504/257,580
  6. Step 6: Final answer
    x = 1,188,304.02

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.