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Finding the Fourth Proportional to 342,490.80, 472,625.69 and 189,535.44

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Solution

The fourth proportional to 342,490.80, 472,625.69 and 189,535.44 is: 261,552.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,490.80 : 472,625.69 = 189,535.44 : x
  2. Step 2: Convert to fraction form
    342,490.80/472,625.69 = 189,535.44/x
  3. Step 3: Cross multiply
    342,490.80x = 472,625.69 × 189,535.44
  4. Step 4: Simplify right side
    342,490.80x = 89,579,318,934.12
  5. Step 5: Solve for x
    x = 89,579,318,934.12/342,490.80
  6. Step 6: Final answer
    x = 261,552.48

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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.