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Finding the Third Proportional to 239,986.50 and 515,587.50

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Solution

The third proportional to 239,986.50 and 515,587.50 is: 1,107,689.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,986.50 : 515,587.50 = 515,587.50 : x
  2. Step 2: Convert to fraction form
    239,986.50/515,587.50 = 515,587.50/x
  3. Step 3: Cross multiply
    239,986.50x = 515,587.50 × 515,587.50
  4. Step 4: Simplify right side
    239,986.50x = 265,830,470,156.25
  5. Step 5: Solve for x
    x = 265,830,470,156.25/239,986.50
  6. Step 6: Final answer
    x = 1,107,689.27

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.