Home / 211,807.20-317,627.58-76,839

Finding the Fourth Proportional to 211,807.20, 317,627.58 and 76,839

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Solution

The fourth proportional to 211,807.20, 317,627.58 and 76,839 is: 115,228.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,807.20 : 317,627.58 = 76,839 : x
  2. Step 2: Convert to fraction form
    211,807.20/317,627.58 = 76,839/x
  3. Step 3: Cross multiply
    211,807.20x = 317,627.58 × 76,839
  4. Step 4: Simplify right side
    211,807.20x = 24,406,185,619.62
  5. Step 5: Solve for x
    x = 24,406,185,619.62/211,807.20
  6. Step 6: Final answer
    x = 115,228.31

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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.