Home / 378,441.20-522,265.58-217,303.04

Finding the Fourth Proportional to 378,441.20, 522,265.58 and 217,303.04

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Solution

The fourth proportional to 378,441.20, 522,265.58 and 217,303.04 is: 299,887.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,441.20 : 522,265.58 = 217,303.04 : x
  2. Step 2: Convert to fraction form
    378,441.20/522,265.58 = 217,303.04/x
  3. Step 3: Cross multiply
    378,441.20x = 522,265.58 × 217,303.04
  4. Step 4: Simplify right side
    378,441.20x = 113,489,894,523.52
  5. Step 5: Solve for x
    x = 113,489,894,523.52/378,441.20
  6. Step 6: Final answer
    x = 299,887.79

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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.