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Finding the Third Proportional to 142,980.75 and 282,370.50

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Solution

The third proportional to 142,980.75 and 282,370.50 is: 557,649.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,980.75 : 282,370.50 = 282,370.50 : x
  2. Step 2: Convert to fraction form
    142,980.75/282,370.50 = 282,370.50/x
  3. Step 3: Cross multiply
    142,980.75x = 282,370.50 × 282,370.50
  4. Step 4: Simplify right side
    142,980.75x = 79,733,099,270.25
  5. Step 5: Solve for x
    x = 79,733,099,270.25/142,980.75
  6. Step 6: Final answer
    x = 557,649.19

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Why These Related Problems?

These problems maintain the same ratio (1.97) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.