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Finding the Fourth Proportional to 356,953.51, 492,591.25 and 203,989.96

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Solution

The fourth proportional to 356,953.51, 492,591.25 and 203,989.96 is: 281,503.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,953.51 : 492,591.25 = 203,989.96 : x
  2. Step 2: Convert to fraction form
    356,953.51/492,591.25 = 203,989.96/x
  3. Step 3: Cross multiply
    356,953.51x = 492,591.25 × 203,989.96
  4. Step 4: Simplify right side
    356,953.51x = 100,483,669,383.85
  5. Step 5: Solve for x
    x = 100,483,669,383.85/356,953.51
  6. Step 6: Final answer
    x = 281,503.52

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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.