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Finding the Fourth Proportional to 445,604.39, 668,518.57 and 205,887.93

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Solution

The fourth proportional to 445,604.39, 668,518.57 and 205,887.93 is: 308,883.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,604.39 : 668,518.57 = 205,887.93 : x
  2. Step 2: Convert to fraction form
    445,604.39/668,518.57 = 205,887.93/x
  3. Step 3: Cross multiply
    445,604.39x = 668,518.57 × 205,887.93
  4. Step 4: Simplify right side
    445,604.39x = 137,639,901,136.16
  5. Step 5: Solve for x
    x = 137,639,901,136.16/445,604.39
  6. Step 6: Final answer
    x = 308,883.63

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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.