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Finding the Fourth Proportional to 211,377.60, 291,694.77 and 115,881.03

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Solution

The fourth proportional to 211,377.60, 291,694.77 and 115,881.03 is: 159,912.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,377.60 : 291,694.77 = 115,881.03 : x
  2. Step 2: Convert to fraction form
    211,377.60/291,694.77 = 115,881.03/x
  3. Step 3: Cross multiply
    211,377.60x = 291,694.77 × 115,881.03
  4. Step 4: Simplify right side
    211,377.60x = 33,801,890,393.21
  5. Step 5: Solve for x
    x = 33,801,890,393.21/211,377.60
  6. Step 6: Final answer
    x = 159,912.36

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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.