Home / 281,255.40-388,134.72-153,932.04

Finding the Fourth Proportional to 281,255.40, 388,134.72 and 153,932.04

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Solution

The fourth proportional to 281,255.40, 388,134.72 and 153,932.04 is: 212,427.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,255.40 : 388,134.72 = 153,932.04 : x
  2. Step 2: Convert to fraction form
    281,255.40/388,134.72 = 153,932.04/x
  3. Step 3: Cross multiply
    281,255.40x = 388,134.72 × 153,932.04
  4. Step 4: Simplify right side
    281,255.40x = 59,746,369,244.43
  5. Step 5: Solve for x
    x = 59,746,369,244.43/281,255.40
  6. Step 6: Final answer
    x = 212,427.46

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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.