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Finding the Fourth Proportional to 305,601.30, 421,727.58 and 169,630.56

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Solution

The fourth proportional to 305,601.30, 421,727.58 and 169,630.56 is: 234,088.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,601.30 : 421,727.58 = 169,630.56 : x
  2. Step 2: Convert to fraction form
    305,601.30/421,727.58 = 169,630.56/x
  3. Step 3: Cross multiply
    305,601.30x = 421,727.58 × 169,630.56
  4. Step 4: Simplify right side
    305,601.30x = 71,537,885,562.84
  5. Step 5: Solve for x
    x = 71,537,885,562.84/305,601.30
  6. Step 6: Final answer
    x = 234,088.94

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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.