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Finding the Fourth Proportional to 257,600.68, 355,078.19 and 203,063.91

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Solution

The fourth proportional to 257,600.68, 355,078.19 and 203,063.91 is: 279,904.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,600.68 : 355,078.19 = 203,063.91 : x
  2. Step 2: Convert to fraction form
    257,600.68/355,078.19 = 203,063.91/x
  3. Step 3: Cross multiply
    257,600.68x = 355,078.19 × 203,063.91
  4. Step 4: Simplify right side
    257,600.68x = 72,103,566,219.44
  5. Step 5: Solve for x
    x = 72,103,566,219.44/257,600.68
  6. Step 6: Final answer
    x = 279,904.41

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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.