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Finding the Third Proportional to 210,022.50 and 318,928.50

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Solution

The third proportional to 210,022.50 and 318,928.50 is: 484,307.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,022.50 : 318,928.50 = 318,928.50 : x
  2. Step 2: Convert to fraction form
    210,022.50/318,928.50 = 318,928.50/x
  3. Step 3: Cross multiply
    210,022.50x = 318,928.50 × 318,928.50
  4. Step 4: Simplify right side
    210,022.50x = 101,715,388,112.25
  5. Step 5: Solve for x
    x = 101,715,388,112.25/210,022.50
  6. Step 6: Final answer
    x = 484,307.10

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.