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Finding the Fourth Proportional to 239,713.78, 330,794.63 and 130,815.35

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Solution

The fourth proportional to 239,713.78, 330,794.63 and 130,815.35 is: 180,519.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,713.78 : 330,794.63 = 130,815.35 : x
  2. Step 2: Convert to fraction form
    239,713.78/330,794.63 = 130,815.35/x
  3. Step 3: Cross multiply
    239,713.78x = 330,794.63 × 130,815.35
  4. Step 4: Simplify right side
    239,713.78x = 43,273,017,321.11
  5. Step 5: Solve for x
    x = 43,273,017,321.11/239,713.78
  6. Step 6: Final answer
    x = 180,519.52

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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.