Home / 221,721.72-305,975.92-119,747.24

Finding the Fourth Proportional to 221,721.72, 305,975.92 and 119,747.24

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Solution

The fourth proportional to 221,721.72, 305,975.92 and 119,747.24 is: 165,251.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,721.72 : 305,975.92 = 119,747.24 : x
  2. Step 2: Convert to fraction form
    221,721.72/305,975.92 = 119,747.24/x
  3. Step 3: Cross multiply
    221,721.72x = 305,975.92 × 119,747.24
  4. Step 4: Simplify right side
    221,721.72x = 36,639,771,926.46
  5. Step 5: Solve for x
    x = 36,639,771,926.46/221,721.72
  6. Step 6: Final answer
    x = 165,251.16

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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.