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Finding the Fourth Proportional to 239,360.55, 330,324.93 and 137,404.64

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Solution

The fourth proportional to 239,360.55, 330,324.93 and 137,404.64 is: 189,622.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,360.55 : 330,324.93 = 137,404.64 : x
  2. Step 2: Convert to fraction form
    239,360.55/330,324.93 = 137,404.64/x
  3. Step 3: Cross multiply
    239,360.55x = 330,324.93 × 137,404.64
  4. Step 4: Simplify right side
    239,360.55x = 45,388,176,438.05
  5. Step 5: Solve for x
    x = 45,388,176,438.05/239,360.55
  6. Step 6: Final answer
    x = 189,622.63

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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.