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Finding the Fourth Proportional to 349,336.80, 481,723.20 and 258,940.80

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Solution

The fourth proportional to 349,336.80, 481,723.20 and 258,940.80 is: 357,070.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,336.80 : 481,723.20 = 258,940.80 : x
  2. Step 2: Convert to fraction form
    349,336.80/481,723.20 = 258,940.80/x
  3. Step 3: Cross multiply
    349,336.80x = 481,723.20 × 258,940.80
  4. Step 4: Simplify right side
    349,336.80x = 124,737,790,786.56
  5. Step 5: Solve for x
    x = 124,737,790,786.56/349,336.80
  6. Step 6: Final answer
    x = 357,070.29

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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.