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Finding the Fourth Proportional to 342,218.97, 472,320.45 and 199,062

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Solution

The fourth proportional to 342,218.97, 472,320.45 and 199,062 is: 274,739.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,218.97 : 472,320.45 = 199,062 : x
  2. Step 2: Convert to fraction form
    342,218.97/472,320.45 = 199,062/x
  3. Step 3: Cross multiply
    342,218.97x = 472,320.45 × 199,062
  4. Step 4: Simplify right side
    342,218.97x = 94,021,053,417.90
  5. Step 5: Solve for x
    x = 94,021,053,417.90/342,218.97
  6. Step 6: Final answer
    x = 274,739.46

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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.