Home / 281,388.18-388,315.62-154,063.74

Finding the Fourth Proportional to 281,388.18, 388,315.62 and 154,063.74

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Solution

The fourth proportional to 281,388.18, 388,315.62 and 154,063.74 is: 212,607.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,388.18 : 388,315.62 = 154,063.74 : x
  2. Step 2: Convert to fraction form
    281,388.18/388,315.62 = 154,063.74/x
  3. Step 3: Cross multiply
    281,388.18x = 388,315.62 × 154,063.74
  4. Step 4: Simplify right side
    281,388.18x = 59,825,356,717.62
  5. Step 5: Solve for x
    x = 59,825,356,717.62/281,388.18
  6. Step 6: Final answer
    x = 212,607.92

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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.