Home / 378,134.46-521,651.34-242,103.06

Finding the Fourth Proportional to 378,134.46, 521,651.34 and 242,103.06

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Solution

The fourth proportional to 378,134.46, 521,651.34 and 242,103.06 is: 333,990.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,134.46 : 521,651.34 = 242,103.06 : x
  2. Step 2: Convert to fraction form
    378,134.46/521,651.34 = 242,103.06/x
  3. Step 3: Cross multiply
    378,134.46x = 521,651.34 × 242,103.06
  4. Step 4: Simplify right side
    378,134.46x = 126,293,385,667.10
  5. Step 5: Solve for x
    x = 126,293,385,667.10/378,134.46
  6. Step 6: Final answer
    x = 333,990.68

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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.