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Finding the Fourth Proportional to 239,825.31, 330,959.64 and 130,929.82

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Solution

The fourth proportional to 239,825.31, 330,959.64 and 130,929.82 is: 180,683.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,825.31 : 330,959.64 = 130,929.82 : x
  2. Step 2: Convert to fraction form
    239,825.31/330,959.64 = 130,929.82/x
  3. Step 3: Cross multiply
    239,825.31x = 330,959.64 × 130,929.82
  4. Step 4: Simplify right side
    239,825.31x = 43,332,486,092.46
  5. Step 5: Solve for x
    x = 43,332,486,092.46/239,825.31
  6. Step 6: Final answer
    x = 180,683.54

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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.