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Finding the Fourth Proportional to 305,522.37, 421,608.38 and 169,561.98

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Solution

The fourth proportional to 305,522.37, 421,608.38 and 169,561.98 is: 233,988.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,522.37 : 421,608.38 = 169,561.98 : x
  2. Step 2: Convert to fraction form
    305,522.37/421,608.38 = 169,561.98/x
  3. Step 3: Cross multiply
    305,522.37x = 421,608.38 × 169,561.98
  4. Step 4: Simplify right side
    305,522.37x = 71,488,750,849.58
  5. Step 5: Solve for x
    x = 71,488,750,849.58/305,522.37
  6. Step 6: Final answer
    x = 233,988.60

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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.