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Finding the Fourth Proportional to 381,819.88, 528,053.16 and 333,990.10

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Solution

The fourth proportional to 381,819.88, 528,053.16 and 333,990.10 is: 461,905.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,819.88 : 528,053.16 = 333,990.10 : x
  2. Step 2: Convert to fraction form
    381,819.88/528,053.16 = 333,990.10/x
  3. Step 3: Cross multiply
    381,819.88x = 528,053.16 × 333,990.10
  4. Step 4: Simplify right side
    381,819.88x = 176,364,527,713.72
  5. Step 5: Solve for x
    x = 176,364,527,713.72/381,819.88
  6. Step 6: Final answer
    x = 461,905.04

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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.