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Finding the Fourth Proportional to 305,597.93, 421,704.03 and 169,621.18

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Solution

The fourth proportional to 305,597.93, 421,704.03 and 169,621.18 is: 234,065.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,597.93 : 421,704.03 = 169,621.18 : x
  2. Step 2: Convert to fraction form
    305,597.93/421,704.03 = 169,621.18/x
  3. Step 3: Cross multiply
    305,597.93x = 421,704.03 × 169,621.18
  4. Step 4: Simplify right side
    305,597.93x = 71,529,935,179.36
  5. Step 5: Solve for x
    x = 71,529,935,179.36/305,597.93
  6. Step 6: Final answer
    x = 234,065.51

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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.