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Finding the Fourth Proportional to 486,791.18, 671,768.64 and 271,929.36

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Solution

The fourth proportional to 486,791.18, 671,768.64 and 271,929.36 is: 375,260.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,791.18 : 671,768.64 = 271,929.36 : x
  2. Step 2: Convert to fraction form
    486,791.18/671,768.64 = 271,929.36/x
  3. Step 3: Cross multiply
    486,791.18x = 671,768.64 × 271,929.36
  4. Step 4: Simplify right side
    486,791.18x = 182,673,616,343.27
  5. Step 5: Solve for x
    x = 182,673,616,343.27/486,791.18
  6. Step 6: Final answer
    x = 375,260.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.