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Finding the Fourth Proportional to 491,703.77, 678,572.13 and 273,912.18

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Solution

The fourth proportional to 491,703.77, 678,572.13 and 273,912.18 is: 378,010.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,703.77 : 678,572.13 = 273,912.18 : x
  2. Step 2: Convert to fraction form
    491,703.77/678,572.13 = 273,912.18/x
  3. Step 3: Cross multiply
    491,703.77x = 678,572.13 × 273,912.18
  4. Step 4: Simplify right side
    491,703.77x = 185,869,171,415.54
  5. Step 5: Solve for x
    x = 185,869,171,415.54/491,703.77
  6. Step 6: Final answer
    x = 378,010.47

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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.