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Finding the Fourth Proportional to 499,434, 689,208.44 and 273,079.50

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Solution

The fourth proportional to 499,434, 689,208.44 and 273,079.50 is: 376,843.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,434 : 689,208.44 = 273,079.50 : x
  2. Step 2: Convert to fraction form
    499,434/689,208.44 = 273,079.50/x
  3. Step 3: Cross multiply
    499,434x = 689,208.44 × 273,079.50
  4. Step 4: Simplify right side
    499,434x = 188,208,696,190.98
  5. Step 5: Solve for x
    x = 188,208,696,190.98/499,434
  6. Step 6: Final answer
    x = 376,843.98

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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.