Home / 211,638.08-317,453.62-85,275.24

Finding the Fourth Proportional to 211,638.08, 317,453.62 and 85,275.24

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Solution

The fourth proportional to 211,638.08, 317,453.62 and 85,275.24 is: 127,911.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,638.08 : 317,453.62 = 85,275.24 : x
  2. Step 2: Convert to fraction form
    211,638.08/317,453.62 = 85,275.24/x
  3. Step 3: Cross multiply
    211,638.08x = 317,453.62 × 85,275.24
  4. Step 4: Simplify right side
    211,638.08x = 27,070,933,634.37
  5. Step 5: Solve for x
    x = 27,070,933,634.37/211,638.08
  6. Step 6: Final answer
    x = 127,911.45

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1.5x scale

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.