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Finding the Fourth Proportional to 342,179.91, 472,211.36 and 189,228.48

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Solution

The fourth proportional to 342,179.91, 472,211.36 and 189,228.48 is: 261,137.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,179.91 : 472,211.36 = 189,228.48 : x
  2. Step 2: Convert to fraction form
    342,179.91/472,211.36 = 189,228.48/x
  3. Step 3: Cross multiply
    342,179.91x = 472,211.36 × 189,228.48
  4. Step 4: Simplify right side
    342,179.91x = 89,355,835,884.20
  5. Step 5: Solve for x
    x = 89,355,835,884.20/342,179.91
  6. Step 6: Final answer
    x = 261,137.00

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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.