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Finding the Fourth Proportional to 272,570.21, 408,826.56 and 72,910.75

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Solution

The fourth proportional to 272,570.21, 408,826.56 and 72,910.75 is: 109,358.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,570.21 : 408,826.56 = 72,910.75 : x
  2. Step 2: Convert to fraction form
    272,570.21/408,826.56 = 72,910.75/x
  3. Step 3: Cross multiply
    272,570.21x = 408,826.56 × 72,910.75
  4. Step 4: Simplify right side
    272,570.21x = 29,807,851,109.52
  5. Step 5: Solve for x
    x = 29,807,851,109.52/272,570.21
  6. Step 6: Final answer
    x = 109,358.43

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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.