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Finding the Fourth Proportional to 311,754.24, 430,107.84 and 255,404.16

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Solution

The fourth proportional to 311,754.24, 430,107.84 and 255,404.16 is: 352,365.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,754.24 : 430,107.84 = 255,404.16 : x
  2. Step 2: Convert to fraction form
    311,754.24/430,107.84 = 255,404.16/x
  3. Step 3: Cross multiply
    311,754.24x = 430,107.84 × 255,404.16
  4. Step 4: Simplify right side
    311,754.24x = 109,851,331,584.61
  5. Step 5: Solve for x
    x = 109,851,331,584.61/311,754.24
  6. Step 6: Final answer
    x = 352,365.16

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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.