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Finding the Third Proportional to 188,140.50 and 291,435.75

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Solution

The third proportional to 188,140.50 and 291,435.75 is: 451,443.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,140.50 : 291,435.75 = 291,435.75 : x
  2. Step 2: Convert to fraction form
    188,140.50/291,435.75 = 291,435.75/x
  3. Step 3: Cross multiply
    188,140.50x = 291,435.75 × 291,435.75
  4. Step 4: Simplify right side
    188,140.50x = 84,934,796,378.06
  5. Step 5: Solve for x
    x = 84,934,796,378.06/188,140.50
  6. Step 6: Final answer
    x = 451,443.45

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.