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Finding the Third Proportional to 257,035 and 384,040

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Solution

The third proportional to 257,035 and 384,040 is: 573,800.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,035 : 384,040 = 384,040 : x
  2. Step 2: Convert to fraction form
    257,035/384,040 = 384,040/x
  3. Step 3: Cross multiply
    257,035x = 384,040 × 384,040
  4. Step 4: Simplify right side
    257,035x = 147,486,721,600
  5. Step 5: Solve for x
    x = 147,486,721,600/257,035
  6. Step 6: Final answer
    x = 573,800.15

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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.