Home / 305,228.28-421,236.59-169,275.23

Finding the Fourth Proportional to 305,228.28, 421,236.59 and 169,275.23

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Solution

The fourth proportional to 305,228.28, 421,236.59 and 169,275.23 is: 233,611.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,228.28 : 421,236.59 = 169,275.23 : x
  2. Step 2: Convert to fraction form
    305,228.28/421,236.59 = 169,275.23/x
  3. Step 3: Cross multiply
    305,228.28x = 421,236.59 × 169,275.23
  4. Step 4: Simplify right side
    305,228.28x = 71,304,917,704.11
  5. Step 5: Solve for x
    x = 71,304,917,704.11/305,228.28
  6. Step 6: Final answer
    x = 233,611.77

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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.