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Finding the Third Proportional to 257,040 and 395,352

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Solution

The third proportional to 257,040 and 395,352 is: 608,089.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,040 : 395,352 = 395,352 : x
  2. Step 2: Convert to fraction form
    257,040/395,352 = 395,352/x
  3. Step 3: Cross multiply
    257,040x = 395,352 × 395,352
  4. Step 4: Simplify right side
    257,040x = 156,303,203,904
  5. Step 5: Solve for x
    x = 156,303,203,904/257,040
  6. Step 6: Final answer
    x = 608,089.03

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.