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Finding the Fourth Proportional to 239,805.32, 330,880.02 and 139,149.32

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Solution

The fourth proportional to 239,805.32, 330,880.02 and 139,149.32 is: 191,996.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,805.32 : 330,880.02 = 139,149.32 : x
  2. Step 2: Convert to fraction form
    239,805.32/330,880.02 = 139,149.32/x
  3. Step 3: Cross multiply
    239,805.32x = 330,880.02 × 139,149.32
  4. Step 4: Simplify right side
    239,805.32x = 46,041,729,784.59
  5. Step 5: Solve for x
    x = 46,041,729,784.59/239,805.32
  6. Step 6: Final answer
    x = 191,996.28

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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.