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Finding the Fourth Proportional to 356,871.93, 492,437.87 and 203,920.04

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Solution

The fourth proportional to 356,871.93, 492,437.87 and 203,920.04 is: 281,383.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,871.93 : 492,437.87 = 203,920.04 : x
  2. Step 2: Convert to fraction form
    356,871.93/492,437.87 = 203,920.04/x
  3. Step 3: Cross multiply
    356,871.93x = 492,437.87 × 203,920.04
  4. Step 4: Simplify right side
    356,871.93x = 100,417,947,685.73
  5. Step 5: Solve for x
    x = 100,417,947,685.73/356,871.93
  6. Step 6: Final answer
    x = 281,383.71

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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.