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Finding the Fourth Proportional to 239,143.40, 330,017.94 and 131,713.16

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Solution

The fourth proportional to 239,143.40, 330,017.94 and 131,713.16 is: 181,764.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,143.40 : 330,017.94 = 131,713.16 : x
  2. Step 2: Convert to fraction form
    239,143.40/330,017.94 = 131,713.16/x
  3. Step 3: Cross multiply
    239,143.40x = 330,017.94 × 131,713.16
  4. Step 4: Simplify right side
    239,143.40x = 43,467,705,734.09
  5. Step 5: Solve for x
    x = 43,467,705,734.09/239,143.40
  6. Step 6: Final answer
    x = 181,764.19

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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.