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Finding the Fourth Proportional to 342,721, 472,954.98 and 191,819.08

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Solution

The fourth proportional to 342,721, 472,954.98 and 191,819.08 is: 264,710.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,721 : 472,954.98 = 191,819.08 : x
  2. Step 2: Convert to fraction form
    342,721/472,954.98 = 191,819.08/x
  3. Step 3: Cross multiply
    342,721x = 472,954.98 × 191,819.08
  4. Step 4: Simplify right side
    342,721x = 90,721,789,145.02
  5. Step 5: Solve for x
    x = 90,721,789,145.02/342,721
  6. Step 6: Final answer
    x = 264,710.33

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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.