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Finding the Fourth Proportional to 543,121.88, 749,508.19 and 331,153.88

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Solution

The fourth proportional to 543,121.88, 749,508.19 and 331,153.88 is: 456,992.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,121.88 : 749,508.19 = 331,153.88 : x
  2. Step 2: Convert to fraction form
    543,121.88/749,508.19 = 331,153.88/x
  3. Step 3: Cross multiply
    543,121.88x = 749,508.19 × 331,153.88
  4. Step 4: Simplify right side
    543,121.88x = 248,202,540,634.85
  5. Step 5: Solve for x
    x = 248,202,540,634.85/543,121.88
  6. Step 6: Final answer
    x = 456,992.35

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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.