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Finding the Third Proportional to 258,504.75 and 388,030.50

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Solution

The third proportional to 258,504.75 and 388,030.50 is: 582,456.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,504.75 : 388,030.50 = 388,030.50 : x
  2. Step 2: Convert to fraction form
    258,504.75/388,030.50 = 388,030.50/x
  3. Step 3: Cross multiply
    258,504.75x = 388,030.50 × 388,030.50
  4. Step 4: Simplify right side
    258,504.75x = 150,567,668,930.25
  5. Step 5: Solve for x
    x = 150,567,668,930.25/258,504.75
  6. Step 6: Final answer
    x = 582,456.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.