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Finding the Third Proportional to 138,154 and 302,220

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Solution

The third proportional to 138,154 and 302,220 is: 661,124.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,154 : 302,220 = 302,220 : x
  2. Step 2: Convert to fraction form
    138,154/302,220 = 302,220/x
  3. Step 3: Cross multiply
    138,154x = 302,220 × 302,220
  4. Step 4: Simplify right side
    138,154x = 91,336,928,400
  5. Step 5: Solve for x
    x = 91,336,928,400/138,154
  6. Step 6: Final answer
    x = 661,124.02

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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.