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Finding the Fourth Proportional to 665,367.40, 998,180.70 and 192,068.20

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Solution

The fourth proportional to 665,367.40, 998,180.70 and 192,068.20 is: 288,139.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,367.40 : 998,180.70 = 192,068.20 : x
  2. Step 2: Convert to fraction form
    665,367.40/998,180.70 = 192,068.20/x
  3. Step 3: Cross multiply
    665,367.40x = 998,180.70 × 192,068.20
  4. Step 4: Simplify right side
    665,367.40x = 191,718,770,323.74
  5. Step 5: Solve for x
    x = 191,718,770,323.74/665,367.40
  6. Step 6: Final answer
    x = 288,139.71

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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.