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Finding the Fourth Proportional to 239,756.46, 330,874.71 and 137,815.02

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Solution

The fourth proportional to 239,756.46, 330,874.71 and 137,815.02 is: 190,190.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,756.46 : 330,874.71 = 137,815.02 : x
  2. Step 2: Convert to fraction form
    239,756.46/330,874.71 = 137,815.02/x
  3. Step 3: Cross multiply
    239,756.46x = 330,874.71 × 137,815.02
  4. Step 4: Simplify right side
    239,756.46x = 45,599,504,776.14
  5. Step 5: Solve for x
    x = 45,599,504,776.14/239,756.46
  6. Step 6: Final answer
    x = 190,190.93

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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.