Home / 281,329.16-388,234.89-154,012.95

Finding the Fourth Proportional to 281,329.16, 388,234.89 and 154,012.95

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Solution

The fourth proportional to 281,329.16, 388,234.89 and 154,012.95 is: 212,538.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,329.16 : 388,234.89 = 154,012.95 : x
  2. Step 2: Convert to fraction form
    281,329.16/388,234.89 = 154,012.95/x
  3. Step 3: Cross multiply
    281,329.16x = 388,234.89 × 154,012.95
  4. Step 4: Simplify right side
    281,329.16x = 59,793,200,701.83
  5. Step 5: Solve for x
    x = 59,793,200,701.83/281,329.16
  6. Step 6: Final answer
    x = 212,538.23

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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.