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Finding the Fourth Proportional to 239,892.41, 359,838.57 and 71,415.20

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Solution

The fourth proportional to 239,892.41, 359,838.57 and 71,415.20 is: 107,122.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,892.41 : 359,838.57 = 71,415.20 : x
  2. Step 2: Convert to fraction form
    239,892.41/359,838.57 = 71,415.20/x
  3. Step 3: Cross multiply
    239,892.41x = 359,838.57 × 71,415.20
  4. Step 4: Simplify right side
    239,892.41x = 25,697,943,444.26
  5. Step 5: Solve for x
    x = 25,697,943,444.26/239,892.41
  6. Step 6: Final answer
    x = 107,122.79

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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.