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Finding the Fourth Proportional to 305,222.01, 421,185.78 and 169,250.96

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Solution

The fourth proportional to 305,222.01, 421,185.78 and 169,250.96 is: 233,554.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,222.01 : 421,185.78 = 169,250.96 : x
  2. Step 2: Convert to fraction form
    305,222.01/421,185.78 = 169,250.96/x
  3. Step 3: Cross multiply
    305,222.01x = 421,185.78 × 169,250.96
  4. Step 4: Simplify right side
    305,222.01x = 71,286,095,497.42
  5. Step 5: Solve for x
    x = 71,286,095,497.42/305,222.01
  6. Step 6: Final answer
    x = 233,554.90

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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.