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Finding the Fourth Proportional to 381,144.07, 525,909.27 and 219,940.30

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Solution

The fourth proportional to 381,144.07, 525,909.27 and 219,940.30 is: 303,477.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,144.07 : 525,909.27 = 219,940.30 : x
  2. Step 2: Convert to fraction form
    381,144.07/525,909.27 = 219,940.30/x
  3. Step 3: Cross multiply
    381,144.07x = 525,909.27 × 219,940.30
  4. Step 4: Simplify right side
    381,144.07x = 115,668,642,616.58
  5. Step 5: Solve for x
    x = 115,668,642,616.58/381,144.07
  6. Step 6: Final answer
    x = 303,477.48

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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.