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Finding the Fourth Proportional to 342,520.30, 472,667.34 and 189,549.28

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Solution

The fourth proportional to 342,520.30, 472,667.34 and 189,549.28 is: 261,572.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,520.30 : 472,667.34 = 189,549.28 : x
  2. Step 2: Convert to fraction form
    342,520.30/472,667.34 = 189,549.28/x
  3. Step 3: Cross multiply
    342,520.30x = 472,667.34 × 189,549.28
  4. Step 4: Simplify right side
    342,520.30x = 89,593,753,976.52
  5. Step 5: Solve for x
    x = 89,593,753,976.52/342,520.30
  6. Step 6: Final answer
    x = 261,572.10

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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.