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Finding the Fourth Proportional to 203,529, 305,321.28 and 70,373.49

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Solution

The fourth proportional to 203,529, 305,321.28 and 70,373.49 is: 105,569.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,529 : 305,321.28 = 70,373.49 : x
  2. Step 2: Convert to fraction form
    203,529/305,321.28 = 70,373.49/x
  3. Step 3: Cross multiply
    203,529x = 305,321.28 × 70,373.49
  4. Step 4: Simplify right side
    203,529x = 21,486,524,044.87
  5. Step 5: Solve for x
    x = 21,486,524,044.87/203,529
  6. Step 6: Final answer
    x = 105,569.84

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1.5x scale

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.