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Finding the Fourth Proportional to 253,801.49, 380,688.18 and 85,304.37

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Solution

The fourth proportional to 253,801.49, 380,688.18 and 85,304.37 is: 127,951.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,801.49 : 380,688.18 = 85,304.37 : x
  2. Step 2: Convert to fraction form
    253,801.49/380,688.18 = 85,304.37/x
  3. Step 3: Cross multiply
    253,801.49x = 380,688.18 × 85,304.37
  4. Step 4: Simplify right side
    253,801.49x = 32,474,365,361.35
  5. Step 5: Solve for x
    x = 32,474,365,361.35/253,801.49
  6. Step 6: Final answer
    x = 127,951.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.