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Finding the Fourth Proportional to 499,389, 689,156.82 and 273,034.50

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Solution

The fourth proportional to 499,389, 689,156.82 and 273,034.50 is: 376,787.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,389 : 689,156.82 = 273,034.50 : x
  2. Step 2: Convert to fraction form
    499,389/689,156.82 = 273,034.50/x
  3. Step 3: Cross multiply
    499,389x = 689,156.82 × 273,034.50
  4. Step 4: Simplify right side
    499,389x = 188,163,587,770.29
  5. Step 5: Solve for x
    x = 188,163,587,770.29/499,389
  6. Step 6: Final answer
    x = 376,787.61

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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.