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Finding the Third Proportional to 156,748 and 338,430

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Solution

The third proportional to 156,748 and 338,430 is: 730,694.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,748 : 338,430 = 338,430 : x
  2. Step 2: Convert to fraction form
    156,748/338,430 = 338,430/x
  3. Step 3: Cross multiply
    156,748x = 338,430 × 338,430
  4. Step 4: Simplify right side
    156,748x = 114,534,864,900
  5. Step 5: Solve for x
    x = 114,534,864,900/156,748
  6. Step 6: Final answer
    x = 730,694.27

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.