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Finding the Third Proportional to 236,290 and 518,509

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Solution

The third proportional to 236,290 and 518,509 is: 1,137,803.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,290 : 518,509 = 518,509 : x
  2. Step 2: Convert to fraction form
    236,290/518,509 = 518,509/x
  3. Step 3: Cross multiply
    236,290x = 518,509 × 518,509
  4. Step 4: Simplify right side
    236,290x = 268,851,583,081
  5. Step 5: Solve for x
    x = 268,851,583,081/236,290
  6. Step 6: Final answer
    x = 1,137,803.47

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.