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Finding the Third Proportional to 155,532 and 321,432

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Solution

The third proportional to 155,532 and 321,432 is: 664,291.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,532 : 321,432 = 321,432 : x
  2. Step 2: Convert to fraction form
    155,532/321,432 = 321,432/x
  3. Step 3: Cross multiply
    155,532x = 321,432 × 321,432
  4. Step 4: Simplify right side
    155,532x = 103,318,530,624
  5. Step 5: Solve for x
    x = 103,318,530,624/155,532
  6. Step 6: Final answer
    x = 664,291.15

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.