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Finding the Fourth Proportional to 629,715.80, 944,487.30 and 208,947.80

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Solution

The fourth proportional to 629,715.80, 944,487.30 and 208,947.80 is: 313,393.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,715.80 : 944,487.30 = 208,947.80 : x
  2. Step 2: Convert to fraction form
    629,715.80/944,487.30 = 208,947.80/x
  3. Step 3: Cross multiply
    629,715.80x = 944,487.30 × 208,947.80
  4. Step 4: Simplify right side
    629,715.80x = 197,348,543,462.94
  5. Step 5: Solve for x
    x = 197,348,543,462.94/629,715.80
  6. Step 6: Final answer
    x = 313,393.03

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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.