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Finding the Third Proportional to 275,563.50 and 390,028.50

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Solution

The third proportional to 275,563.50 and 390,028.50 is: 552,040.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,563.50 : 390,028.50 = 390,028.50 : x
  2. Step 2: Convert to fraction form
    275,563.50/390,028.50 = 390,028.50/x
  3. Step 3: Cross multiply
    275,563.50x = 390,028.50 × 390,028.50
  4. Step 4: Simplify right side
    275,563.50x = 152,122,230,812.25
  5. Step 5: Solve for x
    x = 152,122,230,812.25/275,563.50
  6. Step 6: Final answer
    x = 552,040.57

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.