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Finding the Fourth Proportional to 350,323.69, 481,661.03 and 311,710.45

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Solution

The fourth proportional to 350,323.69, 481,661.03 and 311,710.45 is: 428,571.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,323.69 : 481,661.03 = 311,710.45 : x
  2. Step 2: Convert to fraction form
    350,323.69/481,661.03 = 311,710.45/x
  3. Step 3: Cross multiply
    350,323.69x = 481,661.03 × 311,710.45
  4. Step 4: Simplify right side
    350,323.69x = 150,138,776,408.76
  5. Step 5: Solve for x
    x = 150,138,776,408.76/350,323.69
  6. Step 6: Final answer
    x = 428,571.58

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1.5x scale

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.