Home / 386,701.20-580,079.43-161,835.21

Finding the Fourth Proportional to 386,701.20, 580,079.43 and 161,835.21

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Solution

The fourth proportional to 386,701.20, 580,079.43 and 161,835.21 is: 242,764.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,701.20 : 580,079.43 = 161,835.21 : x
  2. Step 2: Convert to fraction form
    386,701.20/580,079.43 = 161,835.21/x
  3. Step 3: Cross multiply
    386,701.20x = 580,079.43 × 161,835.21
  4. Step 4: Simplify right side
    386,701.20x = 93,877,276,370.73
  5. Step 5: Solve for x
    x = 93,877,276,370.73/386,701.20
  6. Step 6: Final answer
    x = 242,764.38

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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.