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Finding the Fourth Proportional to 383,709.96, 529,567.88 and 220,417.61

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Solution

The fourth proportional to 383,709.96, 529,567.88 and 220,417.61 is: 304,203.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,709.96 : 529,567.88 = 220,417.61 : x
  2. Step 2: Convert to fraction form
    383,709.96/529,567.88 = 220,417.61/x
  3. Step 3: Cross multiply
    383,709.96x = 529,567.88 × 220,417.61
  4. Step 4: Simplify right side
    383,709.96x = 116,726,082,692.44
  5. Step 5: Solve for x
    x = 116,726,082,692.44/383,709.96
  6. Step 6: Final answer
    x = 304,203.94

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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.