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Finding the Fourth Proportional to 377,892.88, 521,515.74 and 208,126.96

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Solution

The fourth proportional to 377,892.88, 521,515.74 and 208,126.96 is: 287,228.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,892.88 : 521,515.74 = 208,126.96 : x
  2. Step 2: Convert to fraction form
    377,892.88/521,515.74 = 208,126.96/x
  3. Step 3: Cross multiply
    377,892.88x = 521,515.74 × 208,126.96
  4. Step 4: Simplify right side
    377,892.88x = 108,541,485,558.35
  5. Step 5: Solve for x
    x = 108,541,485,558.35/377,892.88
  6. Step 6: Final answer
    x = 287,228.18

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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.