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Finding the Fourth Proportional to 257,573.27, 386,418.80 and 89,093.48

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Solution

The fourth proportional to 257,573.27, 386,418.80 and 89,093.48 is: 133,660.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,573.27 : 386,418.80 = 89,093.48 : x
  2. Step 2: Convert to fraction form
    257,573.27/386,418.80 = 89,093.48/x
  3. Step 3: Cross multiply
    257,573.27x = 386,418.80 × 89,093.48
  4. Step 4: Simplify right side
    257,573.27x = 34,427,393,920.06
  5. Step 5: Solve for x
    x = 34,427,393,920.06/257,573.27
  6. Step 6: Final answer
    x = 133,660.58

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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.