Home / 281,427.24-388,365.72-154,102.80

Finding the Fourth Proportional to 281,427.24, 388,365.72 and 154,102.80

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Solution

The fourth proportional to 281,427.24, 388,365.72 and 154,102.80 is: 212,659.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,427.24 : 388,365.72 = 154,102.80 : x
  2. Step 2: Convert to fraction form
    281,427.24/388,365.72 = 154,102.80/x
  3. Step 3: Cross multiply
    281,427.24x = 388,365.72 × 154,102.80
  4. Step 4: Simplify right side
    281,427.24x = 59,848,244,876.02
  5. Step 5: Solve for x
    x = 59,848,244,876.02/281,427.24
  6. Step 6: Final answer
    x = 212,659.74

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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.