Home / 211,368.12-291,685.20-115,874.82

Finding the Fourth Proportional to 211,368.12, 291,685.20 and 115,874.82

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Solution

The fourth proportional to 211,368.12, 291,685.20 and 115,874.82 is: 159,905.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,368.12 : 291,685.20 = 115,874.82 : x
  2. Step 2: Convert to fraction form
    211,368.12/291,685.20 = 115,874.82/x
  3. Step 3: Cross multiply
    211,368.12x = 291,685.20 × 115,874.82
  4. Step 4: Simplify right side
    211,368.12x = 33,798,970,046.66
  5. Step 5: Solve for x
    x = 33,798,970,046.66/211,368.12
  6. Step 6: Final answer
    x = 159,905.71

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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.