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Finding the Fourth Proportional to 239,850, 331,031.88 and 139,306.32

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Solution

The fourth proportional to 239,850, 331,031.88 and 139,306.32 is: 192,265.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,850 : 331,031.88 = 139,306.32 : x
  2. Step 2: Convert to fraction form
    239,850/331,031.88 = 139,306.32/x
  3. Step 3: Cross multiply
    239,850x = 331,031.88 × 139,306.32
  4. Step 4: Simplify right side
    239,850x = 46,114,833,005.48
  5. Step 5: Solve for x
    x = 46,114,833,005.48/239,850
  6. Step 6: Final answer
    x = 192,265.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.