Home / 281,531.80-388,515.18-154,207

Finding the Fourth Proportional to 281,531.80, 388,515.18 and 154,207

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Solution

The fourth proportional to 281,531.80, 388,515.18 and 154,207 is: 212,806.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,531.80 : 388,515.18 = 154,207 : x
  2. Step 2: Convert to fraction form
    281,531.80/388,515.18 = 154,207/x
  3. Step 3: Cross multiply
    281,531.80x = 388,515.18 × 154,207
  4. Step 4: Simplify right side
    281,531.80x = 59,911,760,362.26
  5. Step 5: Solve for x
    x = 59,911,760,362.26/281,531.80
  6. Step 6: Final answer
    x = 212,806.37

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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.