Home / 384,911.56-531,195.06-215,145.64

Finding the Fourth Proportional to 384,911.56, 531,195.06 and 215,145.64

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Solution

The fourth proportional to 384,911.56, 531,195.06 and 215,145.64 is: 296,910.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,911.56 : 531,195.06 = 215,145.64 : x
  2. Step 2: Convert to fraction form
    384,911.56/531,195.06 = 215,145.64/x
  3. Step 3: Cross multiply
    384,911.56x = 531,195.06 × 215,145.64
  4. Step 4: Simplify right side
    384,911.56x = 114,284,301,148.54
  5. Step 5: Solve for x
    x = 114,284,301,148.54/384,911.56
  6. Step 6: Final answer
    x = 296,910.55

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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.