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Finding the Fourth Proportional to 342,565.36, 472,736.61 and 189,603.88

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Solution

The fourth proportional to 342,565.36, 472,736.61 and 189,603.88 is: 261,651.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,565.36 : 472,736.61 = 189,603.88 : x
  2. Step 2: Convert to fraction form
    342,565.36/472,736.61 = 189,603.88/x
  3. Step 3: Cross multiply
    342,565.36x = 472,736.61 × 189,603.88
  4. Step 4: Simplify right side
    342,565.36x = 89,632,695,474.05
  5. Step 5: Solve for x
    x = 89,632,695,474.05/342,565.36
  6. Step 6: Final answer
    x = 261,651.37

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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.