Home / 211,823.20-317,734.80-71,579.80

Finding the Fourth Proportional to 211,823.20, 317,734.80 and 71,579.80

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Solution

The fourth proportional to 211,823.20, 317,734.80 and 71,579.80 is: 107,369.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,823.20 : 317,734.80 = 71,579.80 : x
  2. Step 2: Convert to fraction form
    211,823.20/317,734.80 = 71,579.80/x
  3. Step 3: Cross multiply
    211,823.20x = 317,734.80 × 71,579.80
  4. Step 4: Simplify right side
    211,823.20x = 22,743,393,437.04
  5. Step 5: Solve for x
    x = 22,743,393,437.04/211,823.20
  6. Step 6: Final answer
    x = 107,369.70

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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.