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Finding the Third Proportional to 142,563.50 and 199,313

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Solution

The third proportional to 142,563.50 and 199,313 is: 278,652.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,563.50 : 199,313 = 199,313 : x
  2. Step 2: Convert to fraction form
    142,563.50/199,313 = 199,313/x
  3. Step 3: Cross multiply
    142,563.50x = 199,313 × 199,313
  4. Step 4: Simplify right side
    142,563.50x = 39,725,671,969
  5. Step 5: Solve for x
    x = 39,725,671,969/142,563.50
  6. Step 6: Final answer
    x = 278,652.47

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.