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Finding the Fourth Proportional to 211,351.95, 291,679.26 and 115,858.89

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Solution

The fourth proportional to 211,351.95, 291,679.26 and 115,858.89 is: 159,892.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,351.95 : 291,679.26 = 115,858.89 : x
  2. Step 2: Convert to fraction form
    211,351.95/291,679.26 = 115,858.89/x
  3. Step 3: Cross multiply
    211,351.95x = 291,679.26 × 115,858.89
  4. Step 4: Simplify right side
    211,351.95x = 33,793,635,299.62
  5. Step 5: Solve for x
    x = 33,793,635,299.62/211,351.95
  6. Step 6: Final answer
    x = 159,892.71

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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.