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Finding the Fourth Proportional to 376,520.71, 519,596.18 and 215,378.43

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Solution

The fourth proportional to 376,520.71, 519,596.18 and 215,378.43 is: 297,220.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,520.71 : 519,596.18 = 215,378.43 : x
  2. Step 2: Convert to fraction form
    376,520.71/519,596.18 = 215,378.43/x
  3. Step 3: Cross multiply
    376,520.71x = 519,596.18 × 215,378.43
  4. Step 4: Simplify right side
    376,520.71x = 111,909,809,213.17
  5. Step 5: Solve for x
    x = 111,909,809,213.17/376,520.71
  6. Step 6: Final answer
    x = 297,220.86

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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.