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Finding the Fourth Proportional to 383,380.72, 529,068.96 and 211,304.96

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Solution

The fourth proportional to 383,380.72, 529,068.96 and 211,304.96 is: 291,602.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,380.72 : 529,068.96 = 211,304.96 : x
  2. Step 2: Convert to fraction form
    383,380.72/529,068.96 = 211,304.96/x
  3. Step 3: Cross multiply
    383,380.72x = 529,068.96 × 211,304.96
  4. Step 4: Simplify right side
    383,380.72x = 111,794,895,430.04
  5. Step 5: Solve for x
    x = 111,794,895,430.04/383,380.72
  6. Step 6: Final answer
    x = 291,602.81

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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.