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Finding the Fourth Proportional to 342,129.92, 472,120.24 and 189,159.24

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Solution

The fourth proportional to 342,129.92, 472,120.24 and 189,159.24 is: 261,029.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,129.92 : 472,120.24 = 189,159.24 : x
  2. Step 2: Convert to fraction form
    342,129.92/472,120.24 = 189,159.24/x
  3. Step 3: Cross multiply
    342,129.92x = 472,120.24 × 189,159.24
  4. Step 4: Simplify right side
    342,129.92x = 89,305,905,787.02
  5. Step 5: Solve for x
    x = 89,305,905,787.02/342,129.92
  6. Step 6: Final answer
    x = 261,029.22

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1.5x scale

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.