Home / 385,350.57-578,081.22-119,131.86

Finding the Fourth Proportional to 385,350.57, 578,081.22 and 119,131.86

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Solution

The fourth proportional to 385,350.57, 578,081.22 and 119,131.86 is: 178,714.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,350.57 : 578,081.22 = 119,131.86 : x
  2. Step 2: Convert to fraction form
    385,350.57/578,081.22 = 119,131.86/x
  3. Step 3: Cross multiply
    385,350.57x = 578,081.22 × 119,131.86
  4. Step 4: Simplify right side
    385,350.57x = 68,867,890,969.67
  5. Step 5: Solve for x
    x = 68,867,890,969.67/385,350.57
  6. Step 6: Final answer
    x = 178,714.91

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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.