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Finding the Fourth Proportional to 239,662.01, 330,762.87 and 137,687.30

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Solution

The fourth proportional to 239,662.01, 330,762.87 and 137,687.30 is: 190,025.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,662.01 : 330,762.87 = 137,687.30 : x
  2. Step 2: Convert to fraction form
    239,662.01/330,762.87 = 137,687.30/x
  3. Step 3: Cross multiply
    239,662.01x = 330,762.87 × 137,687.30
  4. Step 4: Simplify right side
    239,662.01x = 45,541,846,510.55
  5. Step 5: Solve for x
    x = 45,541,846,510.55/239,662.01
  6. Step 6: Final answer
    x = 190,025.30

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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.