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Finding the Fourth Proportional to 399,149.75, 550,826.66 and 272,047.39

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Solution

The fourth proportional to 399,149.75, 550,826.66 and 272,047.39 is: 375,425.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,149.75 : 550,826.66 = 272,047.39 : x
  2. Step 2: Convert to fraction form
    399,149.75/550,826.66 = 272,047.39/x
  3. Step 3: Cross multiply
    399,149.75x = 550,826.66 × 272,047.39
  4. Step 4: Simplify right side
    399,149.75x = 149,850,955,195.42
  5. Step 5: Solve for x
    x = 149,850,955,195.42/399,149.75
  6. Step 6: Final answer
    x = 375,425.40

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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.