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Finding the Fourth Proportional to 239,467.12, 359,340.72 and 132,940.78

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Solution

The fourth proportional to 239,467.12, 359,340.72 and 132,940.78 is: 199,488.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,467.12 : 359,340.72 = 132,940.78 : x
  2. Step 2: Convert to fraction form
    239,467.12/359,340.72 = 132,940.78/x
  3. Step 3: Cross multiply
    239,467.12x = 359,340.72 × 132,940.78
  4. Step 4: Simplify right side
    239,467.12x = 47,771,035,602.56
  5. Step 5: Solve for x
    x = 47,771,035,602.56/239,467.12
  6. Step 6: Final answer
    x = 199,488.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.