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Finding the Fourth Proportional to 239,783.25, 359,745.36 and 71,304.87

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Solution

The fourth proportional to 239,783.25, 359,745.36 and 71,304.87 is: 106,978.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,783.25 : 359,745.36 = 71,304.87 : x
  2. Step 2: Convert to fraction form
    239,783.25/359,745.36 = 71,304.87/x
  3. Step 3: Cross multiply
    239,783.25x = 359,745.36 × 71,304.87
  4. Step 4: Simplify right side
    239,783.25x = 25,651,596,127.90
  5. Step 5: Solve for x
    x = 25,651,596,127.90/239,783.25
  6. Step 6: Final answer
    x = 106,978.27

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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.