Home / 211,919.67-317,878.70-54,147.87

Finding the Fourth Proportional to 211,919.67, 317,878.70 and 54,147.87

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Solution

The fourth proportional to 211,919.67, 317,878.70 and 54,147.87 is: 81,221.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,919.67 : 317,878.70 = 54,147.87 : x
  2. Step 2: Convert to fraction form
    211,919.67/317,878.70 = 54,147.87/x
  3. Step 3: Cross multiply
    211,919.67x = 317,878.70 × 54,147.87
  4. Step 4: Simplify right side
    211,919.67x = 17,212,454,252.63
  5. Step 5: Solve for x
    x = 17,212,454,252.63/211,919.67
  6. Step 6: Final answer
    x = 81,221.60

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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.