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Finding the Fourth Proportional to 305,436.72, 421,525.79 and 169,496.39

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Solution

The fourth proportional to 305,436.72, 421,525.79 and 169,496.39 is: 233,917.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,436.72 : 421,525.79 = 169,496.39 : x
  2. Step 2: Convert to fraction form
    305,436.72/421,525.79 = 169,496.39/x
  3. Step 3: Cross multiply
    305,436.72x = 421,525.79 × 169,496.39
  4. Step 4: Simplify right side
    305,436.72x = 71,447,099,696.90
  5. Step 5: Solve for x
    x = 71,447,099,696.90/305,436.72
  6. Step 6: Final answer
    x = 233,917.85

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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.