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Finding the Fourth Proportional to 403,755.30, 605,721.51 and 119,423.61

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Solution

The fourth proportional to 403,755.30, 605,721.51 and 119,423.61 is: 179,161.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,755.30 : 605,721.51 = 119,423.61 : x
  2. Step 2: Convert to fraction form
    403,755.30/605,721.51 = 119,423.61/x
  3. Step 3: Cross multiply
    403,755.30x = 605,721.51 × 119,423.61
  4. Step 4: Simplify right side
    403,755.30x = 72,337,449,378.85
  5. Step 5: Solve for x
    x = 72,337,449,378.85/403,755.30
  6. Step 6: Final answer
    x = 179,161.61

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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.