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Finding the Fourth Proportional to 448,491.92, 618,891.72 and 257,487.44

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Solution

The fourth proportional to 448,491.92, 618,891.72 and 257,487.44 is: 355,317.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,491.92 : 618,891.72 = 257,487.44 : x
  2. Step 2: Convert to fraction form
    448,491.92/618,891.72 = 257,487.44/x
  3. Step 3: Cross multiply
    448,491.92x = 618,891.72 × 257,487.44
  4. Step 4: Simplify right side
    448,491.92x = 159,356,844,620.00
  5. Step 5: Solve for x
    x = 159,356,844,620.00/448,491.92
  6. Step 6: Final answer
    x = 355,317.09

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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.