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Finding the Third Proportional to 153,958 and 338,156

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Solution

The third proportional to 153,958 and 338,156 is: 742,731.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,958 : 338,156 = 338,156 : x
  2. Step 2: Convert to fraction form
    153,958/338,156 = 338,156/x
  3. Step 3: Cross multiply
    153,958x = 338,156 × 338,156
  4. Step 4: Simplify right side
    153,958x = 114,349,480,336
  5. Step 5: Solve for x
    x = 114,349,480,336/153,958
  6. Step 6: Final answer
    x = 742,731.66

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.