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Finding the Fourth Proportional to 375,694.88, 563,616.09 and 139,039.61

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Solution

The fourth proportional to 375,694.88, 563,616.09 and 139,039.61 is: 208,586.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,694.88 : 563,616.09 = 139,039.61 : x
  2. Step 2: Convert to fraction form
    375,694.88/563,616.09 = 139,039.61/x
  3. Step 3: Cross multiply
    375,694.88x = 563,616.09 × 139,039.61
  4. Step 4: Simplify right side
    375,694.88x = 78,364,958,525.24
  5. Step 5: Solve for x
    x = 78,364,958,525.24/375,694.88
  6. Step 6: Final answer
    x = 208,586.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.