Home / 211,804.20-317,623.08-76,836

Finding the Fourth Proportional to 211,804.20, 317,623.08 and 76,836

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Solution

The fourth proportional to 211,804.20, 317,623.08 and 76,836 is: 115,223.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,804.20 : 317,623.08 = 76,836 : x
  2. Step 2: Convert to fraction form
    211,804.20/317,623.08 = 76,836/x
  3. Step 3: Cross multiply
    211,804.20x = 317,623.08 × 76,836
  4. Step 4: Simplify right side
    211,804.20x = 24,404,886,974.88
  5. Step 5: Solve for x
    x = 24,404,886,974.88/211,804.20
  6. Step 6: Final answer
    x = 115,223.81

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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.