Home / 268,819.86-403,288.12-81,826.50

Finding the Fourth Proportional to 268,819.86, 403,288.12 and 81,826.50

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Solution

The fourth proportional to 268,819.86, 403,288.12 and 81,826.50 is: 122,757.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,819.86 : 403,288.12 = 81,826.50 : x
  2. Step 2: Convert to fraction form
    268,819.86/403,288.12 = 81,826.50/x
  3. Step 3: Cross multiply
    268,819.86x = 403,288.12 × 81,826.50
  4. Step 4: Simplify right side
    268,819.86x = 32,999,655,351.18
  5. Step 5: Solve for x
    x = 32,999,655,351.18/268,819.86
  6. Step 6: Final answer
    x = 122,757.51

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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.