Home / 312,140.06-430,761.94-189,591.04

Finding the Fourth Proportional to 312,140.06, 430,761.94 and 189,591.04

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Solution

The fourth proportional to 312,140.06, 430,761.94 and 189,591.04 is: 261,640.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,140.06 : 430,761.94 = 189,591.04 : x
  2. Step 2: Convert to fraction form
    312,140.06/430,761.94 = 189,591.04/x
  3. Step 3: Cross multiply
    312,140.06x = 430,761.94 × 189,591.04
  4. Step 4: Simplify right side
    312,140.06x = 81,668,604,197.02
  5. Step 5: Solve for x
    x = 81,668,604,197.02/312,140.06
  6. Step 6: Final answer
    x = 261,640.89

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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.