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Finding the Fourth Proportional to 381,818.88, 528,051.78 and 333,989.10

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Solution

The fourth proportional to 381,818.88, 528,051.78 and 333,989.10 is: 461,903.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,818.88 : 528,051.78 = 333,989.10 : x
  2. Step 2: Convert to fraction form
    381,818.88/528,051.78 = 333,989.10/x
  3. Step 3: Cross multiply
    381,818.88x = 528,051.78 × 333,989.10
  4. Step 4: Simplify right side
    381,818.88x = 176,363,538,755.60
  5. Step 5: Solve for x
    x = 176,363,538,755.60/381,818.88
  6. Step 6: Final answer
    x = 461,903.66

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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.