Home / 290,854.43-436,281.77-91,190.38

Finding the Fourth Proportional to 290,854.43, 436,281.77 and 91,190.38

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Solution

The fourth proportional to 290,854.43, 436,281.77 and 91,190.38 is: 136,785.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,854.43 : 436,281.77 = 91,190.38 : x
  2. Step 2: Convert to fraction form
    290,854.43/436,281.77 = 91,190.38/x
  3. Step 3: Cross multiply
    290,854.43x = 436,281.77 × 91,190.38
  4. Step 4: Simplify right side
    290,854.43x = 39,784,698,846.72
  5. Step 5: Solve for x
    x = 39,784,698,846.72/290,854.43
  6. Step 6: Final answer
    x = 136,785.61

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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.