Home / 211,717.31-317,334.36-85,276.58

Finding the Fourth Proportional to 211,717.31, 317,334.36 and 85,276.58

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Solution

The fourth proportional to 211,717.31, 317,334.36 and 85,276.58 is: 127,817.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,717.31 : 317,334.36 = 85,276.58 : x
  2. Step 2: Convert to fraction form
    211,717.31/317,334.36 = 85,276.58/x
  3. Step 3: Cross multiply
    211,717.31x = 317,334.36 × 85,276.58
  4. Step 4: Simplify right side
    211,717.31x = 27,061,187,350.62
  5. Step 5: Solve for x
    x = 27,061,187,350.62/211,717.31
  6. Step 6: Final answer
    x = 127,817.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.