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Finding the Fourth Proportional to 257,372.78, 355,194.56 and 165,574.04

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Solution

The fourth proportional to 257,372.78, 355,194.56 and 165,574.04 is: 228,505.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,372.78 : 355,194.56 = 165,574.04 : x
  2. Step 2: Convert to fraction form
    257,372.78/355,194.56 = 165,574.04/x
  3. Step 3: Cross multiply
    257,372.78x = 355,194.56 × 165,574.04
  4. Step 4: Simplify right side
    257,372.78x = 58,810,998,285.22
  5. Step 5: Solve for x
    x = 58,810,998,285.22/257,372.78
  6. Step 6: Final answer
    x = 228,505.12

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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.