Home / 281,788.52-388,869.86-154,463.72

Finding the Fourth Proportional to 281,788.52, 388,869.86 and 154,463.72

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Solution

The fourth proportional to 281,788.52, 388,869.86 and 154,463.72 is: 213,160.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,788.52 : 388,869.86 = 154,463.72 : x
  2. Step 2: Convert to fraction form
    281,788.52/388,869.86 = 154,463.72/x
  3. Step 3: Cross multiply
    281,788.52x = 388,869.86 × 154,463.72
  4. Step 4: Simplify right side
    281,788.52x = 60,066,285,171.48
  5. Step 5: Solve for x
    x = 60,066,285,171.48/281,788.52
  6. Step 6: Final answer
    x = 213,160.87

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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.