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Finding the Fourth Proportional to 187,340.40, 280,879.20 and 68,996.40

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Solution

The fourth proportional to 187,340.40, 280,879.20 and 68,996.40 is: 103,446.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,340.40 : 280,879.20 = 68,996.40 : x
  2. Step 2: Convert to fraction form
    187,340.40/280,879.20 = 68,996.40/x
  3. Step 3: Cross multiply
    187,340.40x = 280,879.20 × 68,996.40
  4. Step 4: Simplify right side
    187,340.40x = 19,379,653,634.88
  5. Step 5: Solve for x
    x = 19,379,653,634.88/187,340.40
  6. Step 6: Final answer
    x = 103,446.21

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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.