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Finding the Fourth Proportional to 305,574.91, 421,685.31 and 169,608.52

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Solution

The fourth proportional to 305,574.91, 421,685.31 and 169,608.52 is: 234,055.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,574.91 : 421,685.31 = 169,608.52 : x
  2. Step 2: Convert to fraction form
    305,574.91/421,685.31 = 169,608.52/x
  3. Step 3: Cross multiply
    305,574.91x = 421,685.31 × 169,608.52
  4. Step 4: Simplify right side
    305,574.91x = 71,521,421,334.84
  5. Step 5: Solve for x
    x = 71,521,421,334.84/305,574.91
  6. Step 6: Final answer
    x = 234,055.28

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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.