Home / 211,249.28-317,033.76-78,210.56

Finding the Fourth Proportional to 211,249.28, 317,033.76 and 78,210.56

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Solution

The fourth proportional to 211,249.28, 317,033.76 and 78,210.56 is: 117,375.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,249.28 : 317,033.76 = 78,210.56 : x
  2. Step 2: Convert to fraction form
    211,249.28/317,033.76 = 78,210.56/x
  3. Step 3: Cross multiply
    211,249.28x = 317,033.76 × 78,210.56
  4. Step 4: Simplify right side
    211,249.28x = 24,795,387,908.51
  5. Step 5: Solve for x
    x = 24,795,387,908.51/211,249.28
  6. Step 6: Final answer
    x = 117,375.02

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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.