Home / 383,142.11-528,777.65-211,077.71

Finding the Fourth Proportional to 383,142.11, 528,777.65 and 211,077.71

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Solution

The fourth proportional to 383,142.11, 528,777.65 and 211,077.71 is: 291,310.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,142.11 : 528,777.65 = 211,077.71 : x
  2. Step 2: Convert to fraction form
    383,142.11/528,777.65 = 211,077.71/x
  3. Step 3: Cross multiply
    383,142.11x = 528,777.65 × 211,077.71
  4. Step 4: Simplify right side
    383,142.11x = 111,613,171,761.91
  5. Step 5: Solve for x
    x = 111,613,171,761.91/383,142.11
  6. Step 6: Final answer
    x = 291,310.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.