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Finding the Fourth Proportional to 239,235.13, 330,192.29 and 137,329.48

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Solution

The fourth proportional to 239,235.13, 330,192.29 and 137,329.48 is: 189,542.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,235.13 : 330,192.29 = 137,329.48 : x
  2. Step 2: Convert to fraction form
    239,235.13/330,192.29 = 137,329.48/x
  3. Step 3: Cross multiply
    239,235.13x = 330,192.29 × 137,329.48
  4. Step 4: Simplify right side
    239,235.13x = 45,345,135,485.71
  5. Step 5: Solve for x
    x = 45,345,135,485.71/239,235.13
  6. Step 6: Final answer
    x = 189,542.13

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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.