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Finding the Fourth Proportional to 239,889.31, 359,905.88 and 71,415.52

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Solution

The fourth proportional to 239,889.31, 359,905.88 and 71,415.52 is: 107,144.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,889.31 : 359,905.88 = 71,415.52 : x
  2. Step 2: Convert to fraction form
    239,889.31/359,905.88 = 71,415.52/x
  3. Step 3: Cross multiply
    239,889.31x = 359,905.88 × 71,415.52
  4. Step 4: Simplify right side
    239,889.31x = 25,702,865,571.26
  5. Step 5: Solve for x
    x = 25,702,865,571.26/239,889.31
  6. Step 6: Final answer
    x = 107,144.69

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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.