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Finding the Fourth Proportional to 239,495.42, 359,138.84 and 68,679.47

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Solution

The fourth proportional to 239,495.42, 359,138.84 and 68,679.47 is: 102,989.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,495.42 : 359,138.84 = 68,679.47 : x
  2. Step 2: Convert to fraction form
    239,495.42/359,138.84 = 68,679.47/x
  3. Step 3: Cross multiply
    239,495.42x = 359,138.84 × 68,679.47
  4. Step 4: Simplify right side
    239,495.42x = 24,665,463,048.52
  5. Step 5: Solve for x
    x = 24,665,463,048.52/239,495.42
  6. Step 6: Final answer
    x = 102,989.29

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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.