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Finding the Fourth Proportional to 211,379.67, 291,696.21 and 115,884.27

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Solution

The fourth proportional to 211,379.67, 291,696.21 and 115,884.27 is: 159,916.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,379.67 : 291,696.21 = 115,884.27 : x
  2. Step 2: Convert to fraction form
    211,379.67/291,696.21 = 115,884.27/x
  3. Step 3: Cross multiply
    211,379.67x = 291,696.21 × 115,884.27
  4. Step 4: Simplify right side
    211,379.67x = 33,803,002,357.62
  5. Step 5: Solve for x
    x = 33,803,002,357.62/211,379.67
  6. Step 6: Final answer
    x = 159,916.05

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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.