Home / 211,484.80-317,247.36-71,286.40

Finding the Fourth Proportional to 211,484.80, 317,247.36 and 71,286.40

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Solution

The fourth proportional to 211,484.80, 317,247.36 and 71,286.40 is: 106,936.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,484.80 : 317,247.36 = 71,286.40 : x
  2. Step 2: Convert to fraction form
    211,484.80/317,247.36 = 71,286.40/x
  3. Step 3: Cross multiply
    211,484.80x = 317,247.36 × 71,286.40
  4. Step 4: Simplify right side
    211,484.80x = 22,615,422,203.90
  5. Step 5: Solve for x
    x = 22,615,422,203.90/211,484.80
  6. Step 6: Final answer
    x = 106,936.40

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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.