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Finding the Fourth Proportional to 386,773.63, 580,160.63 and 120,555.61

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Solution

The fourth proportional to 386,773.63, 580,160.63 and 120,555.61 is: 180,833.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,773.63 : 580,160.63 = 120,555.61 : x
  2. Step 2: Convert to fraction form
    386,773.63/580,160.63 = 120,555.61/x
  3. Step 3: Cross multiply
    386,773.63x = 580,160.63 × 120,555.61
  4. Step 4: Simplify right side
    386,773.63x = 69,941,618,647.63
  5. Step 5: Solve for x
    x = 69,941,618,647.63/386,773.63
  6. Step 6: Final answer
    x = 180,833.47

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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.