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Finding the Fourth Proportional to 383,937.90, 529,859.10 and 220,646.94

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Solution

The fourth proportional to 383,937.90, 529,859.10 and 220,646.94 is: 304,507.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,937.90 : 529,859.10 = 220,646.94 : x
  2. Step 2: Convert to fraction form
    383,937.90/529,859.10 = 220,646.94/x
  3. Step 3: Cross multiply
    383,937.90x = 529,859.10 × 220,646.94
  4. Step 4: Simplify right side
    383,937.90x = 116,911,789,046.15
  5. Step 5: Solve for x
    x = 116,911,789,046.15/383,937.90
  6. Step 6: Final answer
    x = 304,507.03

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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.