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Finding the Fourth Proportional to 383,444.78, 529,157.52 and 211,369.46

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Solution

The fourth proportional to 383,444.78, 529,157.52 and 211,369.46 is: 291,691.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,444.78 : 529,157.52 = 211,369.46 : x
  2. Step 2: Convert to fraction form
    383,444.78/529,157.52 = 211,369.46/x
  3. Step 3: Cross multiply
    383,444.78x = 529,157.52 × 211,369.46
  4. Step 4: Simplify right side
    383,444.78x = 111,847,739,257.34
  5. Step 5: Solve for x
    x = 111,847,739,257.34/383,444.78
  6. Step 6: Final answer
    x = 291,691.91

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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.