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Finding the Third Proportional to 265,776 and 397,920

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Solution

The third proportional to 265,776 and 397,920 is: 595,766.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,776 : 397,920 = 397,920 : x
  2. Step 2: Convert to fraction form
    265,776/397,920 = 397,920/x
  3. Step 3: Cross multiply
    265,776x = 397,920 × 397,920
  4. Step 4: Simplify right side
    265,776x = 158,340,326,400
  5. Step 5: Solve for x
    x = 158,340,326,400/265,776
  6. Step 6: Final answer
    x = 595,766.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.