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Finding the Fourth Proportional to 342,149.88, 472,152.78 and 189,178.32

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Solution

The fourth proportional to 342,149.88, 472,152.78 and 189,178.32 is: 261,058.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,149.88 : 472,152.78 = 189,178.32 : x
  2. Step 2: Convert to fraction form
    342,149.88/472,152.78 = 189,178.32/x
  3. Step 3: Cross multiply
    342,149.88x = 472,152.78 × 189,178.32
  4. Step 4: Simplify right side
    342,149.88x = 89,321,069,703.73
  5. Step 5: Solve for x
    x = 89,321,069,703.73/342,149.88
  6. Step 6: Final answer
    x = 261,058.31

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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.