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Finding the Fourth Proportional to 239,691.48, 330,794.46 and 139,083

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Solution

The fourth proportional to 239,691.48, 330,794.46 and 139,083 is: 191,946.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,691.48 : 330,794.46 = 139,083 : x
  2. Step 2: Convert to fraction form
    239,691.48/330,794.46 = 139,083/x
  3. Step 3: Cross multiply
    239,691.48x = 330,794.46 × 139,083
  4. Step 4: Simplify right side
    239,691.48x = 46,007,885,880.18
  5. Step 5: Solve for x
    x = 46,007,885,880.18/239,691.48
  6. Step 6: Final answer
    x = 191,946.27

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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.