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Finding the Fourth Proportional to 239,842.96, 330,998.28 and 137,900.88

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Solution

The fourth proportional to 239,842.96, 330,998.28 and 137,900.88 is: 190,311.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,842.96 : 330,998.28 = 137,900.88 : x
  2. Step 2: Convert to fraction form
    239,842.96/330,998.28 = 137,900.88/x
  3. Step 3: Cross multiply
    239,842.96x = 330,998.28 × 137,900.88
  4. Step 4: Simplify right side
    239,842.96x = 45,644,954,090.49
  5. Step 5: Solve for x
    x = 45,644,954,090.49/239,842.96
  6. Step 6: Final answer
    x = 190,311.84

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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.