Home / 211,970.40-317,958.80-54,195.36

Finding the Fourth Proportional to 211,970.40, 317,958.80 and 54,195.36

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Solution

The fourth proportional to 211,970.40, 317,958.80 and 54,195.36 is: 81,293.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,970.40 : 317,958.80 = 54,195.36 : x
  2. Step 2: Convert to fraction form
    211,970.40/317,958.80 = 54,195.36/x
  3. Step 3: Cross multiply
    211,970.40x = 317,958.80 × 54,195.36
  4. Step 4: Simplify right side
    211,970.40x = 17,231,891,631.17
  5. Step 5: Solve for x
    x = 17,231,891,631.17/211,970.40
  6. Step 6: Final answer
    x = 81,293.86

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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.