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Finding the Fourth Proportional to 239,967.24, 331,218.84 and 138,003.84

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Solution

The fourth proportional to 239,967.24, 331,218.84 and 138,003.84 is: 190,482.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,967.24 : 331,218.84 = 138,003.84 : x
  2. Step 2: Convert to fraction form
    239,967.24/331,218.84 = 138,003.84/x
  3. Step 3: Cross multiply
    239,967.24x = 331,218.84 × 138,003.84
  4. Step 4: Simplify right side
    239,967.24x = 45,709,471,800.35
  5. Step 5: Solve for x
    x = 45,709,471,800.35/239,967.24
  6. Step 6: Final answer
    x = 190,482.13

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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.