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Finding the Fourth Proportional to 350,323.19, 481,660.34 and 311,709.95

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Solution

The fourth proportional to 350,323.19, 481,660.34 and 311,709.95 is: 428,570.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,323.19 : 481,660.34 = 311,709.95 : x
  2. Step 2: Convert to fraction form
    350,323.19/481,660.34 = 311,709.95/x
  3. Step 3: Cross multiply
    350,323.19x = 481,660.34 × 311,709.95
  4. Step 4: Simplify right side
    350,323.19x = 150,138,320,498.38
  5. Step 5: Solve for x
    x = 150,138,320,498.38/350,323.19
  6. Step 6: Final answer
    x = 428,570.89

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.