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Finding the Fourth Proportional to 444,865.70, 666,981.57 and 208,079.30

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Solution

The fourth proportional to 444,865.70, 666,981.57 and 208,079.30 is: 311,970.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,865.70 : 666,981.57 = 208,079.30 : x
  2. Step 2: Convert to fraction form
    444,865.70/666,981.57 = 208,079.30/x
  3. Step 3: Cross multiply
    444,865.70x = 666,981.57 × 208,079.30
  4. Step 4: Simplify right side
    444,865.70x = 138,785,058,198.50
  5. Step 5: Solve for x
    x = 138,785,058,198.50/444,865.70
  6. Step 6: Final answer
    x = 311,970.69

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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.