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Finding the Third Proportional to 155,928.50 and 328,157.50

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Solution

The third proportional to 155,928.50 and 328,157.50 is: 690,620.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,928.50 : 328,157.50 = 328,157.50 : x
  2. Step 2: Convert to fraction form
    155,928.50/328,157.50 = 328,157.50/x
  3. Step 3: Cross multiply
    155,928.50x = 328,157.50 × 328,157.50
  4. Step 4: Simplify right side
    155,928.50x = 107,687,344,806.25
  5. Step 5: Solve for x
    x = 107,687,344,806.25/155,928.50
  6. Step 6: Final answer
    x = 690,620.03

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.