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Finding the Fourth Proportional to 265,940.20, 399,104.70 and 187,208.20

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Solution

The fourth proportional to 265,940.20, 399,104.70 and 187,208.20 is: 280,949.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,940.20 : 399,104.70 = 187,208.20 : x
  2. Step 2: Convert to fraction form
    265,940.20/399,104.70 = 187,208.20/x
  3. Step 3: Cross multiply
    265,940.20x = 399,104.70 × 187,208.20
  4. Step 4: Simplify right side
    265,940.20x = 74,715,672,498.54
  5. Step 5: Solve for x
    x = 74,715,672,498.54/265,940.20
  6. Step 6: Final answer
    x = 280,949.15

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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.