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Finding the Fourth Proportional to 266,208.76, 399,789.06 and 255,506.20

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Solution

The fourth proportional to 266,208.76, 399,789.06 and 255,506.20 is: 383,716.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,208.76 : 399,789.06 = 255,506.20 : x
  2. Step 2: Convert to fraction form
    266,208.76/399,789.06 = 255,506.20/x
  3. Step 3: Cross multiply
    266,208.76x = 399,789.06 × 255,506.20
  4. Step 4: Simplify right side
    266,208.76x = 102,148,583,522.17
  5. Step 5: Solve for x
    x = 102,148,583,522.17/266,208.76
  6. Step 6: Final answer
    x = 383,716.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.