Home / 211,180.82-291,430.05-115,689.38

Finding the Fourth Proportional to 211,180.82, 291,430.05 and 115,689.38

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Solution

The fourth proportional to 211,180.82, 291,430.05 and 115,689.38 is: 159,651.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,180.82 : 291,430.05 = 115,689.38 : x
  2. Step 2: Convert to fraction form
    211,180.82/291,430.05 = 115,689.38/x
  3. Step 3: Cross multiply
    211,180.82x = 291,430.05 × 115,689.38
  4. Step 4: Simplify right side
    211,180.82x = 33,715,361,797.87
  5. Step 5: Solve for x
    x = 33,715,361,797.87/211,180.82
  6. Step 6: Final answer
    x = 159,651.63

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1.5x scale

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.