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Finding the Fourth Proportional to 239,301.98, 330,238.95 and 131,875.87

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Solution

The fourth proportional to 239,301.98, 330,238.95 and 131,875.87 is: 181,989.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,301.98 : 330,238.95 = 131,875.87 : x
  2. Step 2: Convert to fraction form
    239,301.98/330,238.95 = 131,875.87/x
  3. Step 3: Cross multiply
    239,301.98x = 330,238.95 × 131,875.87
  4. Step 4: Simplify right side
    239,301.98x = 43,550,548,839.14
  5. Step 5: Solve for x
    x = 43,550,548,839.14/239,301.98
  6. Step 6: Final answer
    x = 181,989.92

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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.