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Finding the Third Proportional to 155,565 and 247,356

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Solution

The third proportional to 155,565 and 247,356 is: 393,308.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,565 : 247,356 = 247,356 : x
  2. Step 2: Convert to fraction form
    155,565/247,356 = 247,356/x
  3. Step 3: Cross multiply
    155,565x = 247,356 × 247,356
  4. Step 4: Simplify right side
    155,565x = 61,184,990,736
  5. Step 5: Solve for x
    x = 61,184,990,736/155,565
  6. Step 6: Final answer
    x = 393,308.20

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.