Home / 211,977.80-317,966.70-54,218.60

Finding the Fourth Proportional to 211,977.80, 317,966.70 and 54,218.60

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Solution

The fourth proportional to 211,977.80, 317,966.70 and 54,218.60 is: 81,327.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,977.80 : 317,966.70 = 54,218.60 : x
  2. Step 2: Convert to fraction form
    211,977.80/317,966.70 = 54,218.60/x
  3. Step 3: Cross multiply
    211,977.80x = 317,966.70 × 54,218.60
  4. Step 4: Simplify right side
    211,977.80x = 17,239,709,320.62
  5. Step 5: Solve for x
    x = 17,239,709,320.62/211,977.80
  6. Step 6: Final answer
    x = 81,327.90

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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.