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Finding the Fourth Proportional to 449,687.92, 620,604.71 and 256,103.82

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Solution

The fourth proportional to 449,687.92, 620,604.71 and 256,103.82 is: 353,443.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,687.92 : 620,604.71 = 256,103.82 : x
  2. Step 2: Convert to fraction form
    449,687.92/620,604.71 = 256,103.82/x
  3. Step 3: Cross multiply
    449,687.92x = 620,604.71 × 256,103.82
  4. Step 4: Simplify right side
    449,687.92x = 158,939,236,940.99
  5. Step 5: Solve for x
    x = 158,939,236,940.99/449,687.92
  6. Step 6: Final answer
    x = 353,443.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.