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Finding the Third Proportional to 74,220 and 153,684

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Solution

The third proportional to 74,220 and 153,684 is: 318,226.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,220 : 153,684 = 153,684 : x
  2. Step 2: Convert to fraction form
    74,220/153,684 = 153,684/x
  3. Step 3: Cross multiply
    74,220x = 153,684 × 153,684
  4. Step 4: Simplify right side
    74,220x = 23,618,771,856
  5. Step 5: Solve for x
    x = 23,618,771,856/74,220
  6. Step 6: Final answer
    x = 318,226.51

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.