Home / 211,732.08-317,395.96-78,576.72

Finding the Fourth Proportional to 211,732.08, 317,395.96 and 78,576.72

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Solution

The fourth proportional to 211,732.08, 317,395.96 and 78,576.72 is: 117,790.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,732.08 : 317,395.96 = 78,576.72 : x
  2. Step 2: Convert to fraction form
    211,732.08/317,395.96 = 78,576.72/x
  3. Step 3: Cross multiply
    211,732.08x = 317,395.96 × 78,576.72
  4. Step 4: Simplify right side
    211,732.08x = 24,939,933,478.05
  5. Step 5: Solve for x
    x = 24,939,933,478.05/211,732.08
  6. Step 6: Final answer
    x = 117,790.06

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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.