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Finding the Fourth Proportional to 305,255.50, 421,252.59 and 169,310.26

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Solution

The fourth proportional to 305,255.50, 421,252.59 and 169,310.26 is: 233,648.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,255.50 : 421,252.59 = 169,310.26 : x
  2. Step 2: Convert to fraction form
    305,255.50/421,252.59 = 169,310.26/x
  3. Step 3: Cross multiply
    305,255.50x = 421,252.59 × 169,310.26
  4. Step 4: Simplify right side
    305,255.50x = 71,322,385,538.57
  5. Step 5: Solve for x
    x = 71,322,385,538.57/305,255.50
  6. Step 6: Final answer
    x = 233,648.16

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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.