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Finding the Fourth Proportional to 305,601.93, 421,709.55 and 169,625.19

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Solution

The fourth proportional to 305,601.93, 421,709.55 and 169,625.19 is: 234,071.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,601.93 : 421,709.55 = 169,625.19 : x
  2. Step 2: Convert to fraction form
    305,601.93/421,709.55 = 169,625.19/x
  3. Step 3: Cross multiply
    305,601.93x = 421,709.55 × 169,625.19
  4. Step 4: Simplify right side
    305,601.93x = 71,532,562,543.56
  5. Step 5: Solve for x
    x = 71,532,562,543.56/305,601.93
  6. Step 6: Final answer
    x = 234,071.04

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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.