Home / 378,069.72-521,811.66-217,033.56

Finding the Fourth Proportional to 378,069.72, 521,811.66 and 217,033.56

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Solution

The fourth proportional to 378,069.72, 521,811.66 and 217,033.56 is: 299,549.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,069.72 : 521,811.66 = 217,033.56 : x
  2. Step 2: Convert to fraction form
    378,069.72/521,811.66 = 217,033.56/x
  3. Step 3: Cross multiply
    378,069.72x = 521,811.66 × 217,033.56
  4. Step 4: Simplify right side
    378,069.72x = 113,250,642,219.31
  5. Step 5: Solve for x
    x = 113,250,642,219.31/378,069.72
  6. Step 6: Final answer
    x = 299,549.62

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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.