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Finding the Third Proportional to 135,215 and 288,527

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Solution

The third proportional to 135,215 and 288,527 is: 615,670.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,215 : 288,527 = 288,527 : x
  2. Step 2: Convert to fraction form
    135,215/288,527 = 288,527/x
  3. Step 3: Cross multiply
    135,215x = 288,527 × 288,527
  4. Step 4: Simplify right side
    135,215x = 83,247,829,729
  5. Step 5: Solve for x
    x = 83,247,829,729/135,215
  6. Step 6: Final answer
    x = 615,670.08

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.