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Finding the Fourth Proportional to 376,810.88, 519,968.85 and 215,628.98

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Solution

The fourth proportional to 376,810.88, 519,968.85 and 215,628.98 is: 297,550.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,810.88 : 519,968.85 = 215,628.98 : x
  2. Step 2: Convert to fraction form
    376,810.88/519,968.85 = 215,628.98/x
  3. Step 3: Cross multiply
    376,810.88x = 519,968.85 × 215,628.98
  4. Step 4: Simplify right side
    376,810.88x = 112,120,352,757.27
  5. Step 5: Solve for x
    x = 112,120,352,757.27/376,810.88
  6. Step 6: Final answer
    x = 297,550.73

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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.