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Finding the Fourth Proportional to 305,454.70, 421,550.54 and 169,514.32

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Solution

The fourth proportional to 305,454.70, 421,550.54 and 169,514.32 is: 233,942.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,454.70 : 421,550.54 = 169,514.32 : x
  2. Step 2: Convert to fraction form
    305,454.70/421,550.54 = 169,514.32/x
  3. Step 3: Cross multiply
    305,454.70x = 421,550.54 × 169,514.32
  4. Step 4: Simplify right side
    305,454.70x = 71,458,853,133.73
  5. Step 5: Solve for x
    x = 71,458,853,133.73/305,454.70
  6. Step 6: Final answer
    x = 233,942.56

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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.