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Finding the Fourth Proportional to 381,080.48, 525,934.42 and 219,978.76

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Solution

The fourth proportional to 381,080.48, 525,934.42 and 219,978.76 is: 303,595.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,080.48 : 525,934.42 = 219,978.76 : x
  2. Step 2: Convert to fraction form
    381,080.48/525,934.42 = 219,978.76/x
  3. Step 3: Cross multiply
    381,080.48x = 525,934.42 × 219,978.76
  4. Step 4: Simplify right side
    381,080.48x = 115,694,401,552.92
  5. Step 5: Solve for x
    x = 115,694,401,552.92/381,080.48
  6. Step 6: Final answer
    x = 303,595.72

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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.