Home / 385,067.22-531,391.04-215,301.35

Finding the Fourth Proportional to 385,067.22, 531,391.04 and 215,301.35

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Solution

The fourth proportional to 385,067.22, 531,391.04 and 215,301.35 is: 297,114.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,067.22 : 531,391.04 = 215,301.35 : x
  2. Step 2: Convert to fraction form
    385,067.22/531,391.04 = 215,301.35/x
  3. Step 3: Cross multiply
    385,067.22x = 531,391.04 × 215,301.35
  4. Step 4: Simplify right side
    385,067.22x = 114,409,204,556.44
  5. Step 5: Solve for x
    x = 114,409,204,556.44/385,067.22
  6. Step 6: Final answer
    x = 297,114.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.