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Finding the Fourth Proportional to 342,695.72, 472,904.66 and 189,723.17

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Solution

The fourth proportional to 342,695.72, 472,904.66 and 189,723.17 is: 261,809.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,695.72 : 472,904.66 = 189,723.17 : x
  2. Step 2: Convert to fraction form
    342,695.72/472,904.66 = 189,723.17/x
  3. Step 3: Cross multiply
    342,695.72x = 472,904.66 × 189,723.17
  4. Step 4: Simplify right side
    342,695.72x = 89,720,972,859.54
  5. Step 5: Solve for x
    x = 89,720,972,859.54/342,695.72
  6. Step 6: Final answer
    x = 261,809.43

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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.