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Finding the Fourth Proportional to 383,636.46, 529,406.16 and 211,561.68

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Solution

The fourth proportional to 383,636.46, 529,406.16 and 211,561.68 is: 291,948.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,636.46 : 529,406.16 = 211,561.68 : x
  2. Step 2: Convert to fraction form
    383,636.46/529,406.16 = 211,561.68/x
  3. Step 3: Cross multiply
    383,636.46x = 529,406.16 × 211,561.68
  4. Step 4: Simplify right side
    383,636.46x = 112,002,056,611.95
  5. Step 5: Solve for x
    x = 112,002,056,611.95/383,636.46
  6. Step 6: Final answer
    x = 291,948.42

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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.