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Finding the Fourth Proportional to 305,383.73, 421,153.44 and 190,672.73

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Solution

The fourth proportional to 305,383.73, 421,153.44 and 190,672.73 is: 262,955.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,383.73 : 421,153.44 = 190,672.73 : x
  2. Step 2: Convert to fraction form
    305,383.73/421,153.44 = 190,672.73/x
  3. Step 3: Cross multiply
    305,383.73x = 421,153.44 × 190,672.73
  4. Step 4: Simplify right side
    305,383.73x = 80,302,476,153.69
  5. Step 5: Solve for x
    x = 80,302,476,153.69/305,383.73
  6. Step 6: Final answer
    x = 262,955.97

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1.5x scale

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.