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Finding the Fourth Proportional to 441,814, 662,721 and 109,390

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Solution

The fourth proportional to 441,814, 662,721 and 109,390 is: 164,085

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,814 : 662,721 = 109,390 : x
  2. Step 2: Convert to fraction form
    441,814/662,721 = 109,390/x
  3. Step 3: Cross multiply
    441,814x = 662,721 × 109,390
  4. Step 4: Simplify right side
    441,814x = 72,495,050,190
  5. Step 5: Solve for x
    x = 72,495,050,190/441,814
  6. Step 6: Final answer
    x = 164,085

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.