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Finding the Fourth Proportional to 342,753.09, 472,993.48 and 189,787.98

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Solution

The fourth proportional to 342,753.09, 472,993.48 and 189,787.98 is: 261,904.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,753.09 : 472,993.48 = 189,787.98 : x
  2. Step 2: Convert to fraction form
    342,753.09/472,993.48 = 189,787.98/x
  3. Step 3: Cross multiply
    342,753.09x = 472,993.48 × 189,787.98
  4. Step 4: Simplify right side
    342,753.09x = 89,768,477,122.37
  5. Step 5: Solve for x
    x = 89,768,477,122.37/342,753.09
  6. Step 6: Final answer
    x = 261,904.21

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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.