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Finding the Fourth Proportional to 239,065.54, 329,917.70 and 131,639.42

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Solution

The fourth proportional to 239,065.54, 329,917.70 and 131,639.42 is: 181,666.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,065.54 : 329,917.70 = 131,639.42 : x
  2. Step 2: Convert to fraction form
    239,065.54/329,917.70 = 131,639.42/x
  3. Step 3: Cross multiply
    239,065.54x = 329,917.70 × 131,639.42
  4. Step 4: Simplify right side
    239,065.54x = 43,430,174,675.73
  5. Step 5: Solve for x
    x = 43,430,174,675.73/239,065.54
  6. Step 6: Final answer
    x = 181,666.39

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1.5x scale

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.