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Finding the Fourth Proportional to 305,169.22, 421,131.45 and 169,203.23

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Solution

The fourth proportional to 305,169.22, 421,131.45 and 169,203.23 is: 233,499.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,169.22 : 421,131.45 = 169,203.23 : x
  2. Step 2: Convert to fraction form
    305,169.22/421,131.45 = 169,203.23/x
  3. Step 3: Cross multiply
    305,169.22x = 421,131.45 × 169,203.23
  4. Step 4: Simplify right side
    305,169.22x = 71,256,801,702.68
  5. Step 5: Solve for x
    x = 71,256,801,702.68/305,169.22
  6. Step 6: Final answer
    x = 233,499.31

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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.