Home / 211,971.40-317,960.30-54,196.36

Finding the Fourth Proportional to 211,971.40, 317,960.30 and 54,196.36

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Solution

The fourth proportional to 211,971.40, 317,960.30 and 54,196.36 is: 81,295.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,971.40 : 317,960.30 = 54,196.36 : x
  2. Step 2: Convert to fraction form
    211,971.40/317,960.30 = 54,196.36/x
  3. Step 3: Cross multiply
    211,971.40x = 317,960.30 × 54,196.36
  4. Step 4: Simplify right side
    211,971.40x = 17,232,290,884.51
  5. Step 5: Solve for x
    x = 17,232,290,884.51/211,971.40
  6. Step 6: Final answer
    x = 81,295.36

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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.