Home / 211,881.40-317,821.14-71,736.76

Finding the Fourth Proportional to 211,881.40, 317,821.14 and 71,736.76

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Solution

The fourth proportional to 211,881.40, 317,821.14 and 71,736.76 is: 107,604.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,881.40 : 317,821.14 = 71,736.76 : x
  2. Step 2: Convert to fraction form
    211,881.40/317,821.14 = 71,736.76/x
  3. Step 3: Cross multiply
    211,881.40x = 317,821.14 × 71,736.76
  4. Step 4: Simplify right side
    211,881.40x = 22,799,458,843.11
  5. Step 5: Solve for x
    x = 22,799,458,843.11/211,881.40
  6. Step 6: Final answer
    x = 107,604.81

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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.