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Finding the Fourth Proportional to 350,322.69, 481,659.65 and 311,709.45

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Solution

The fourth proportional to 350,322.69, 481,659.65 and 311,709.45 is: 428,570.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,322.69 : 481,659.65 = 311,709.45 : x
  2. Step 2: Convert to fraction form
    350,322.69/481,659.65 = 311,709.45/x
  3. Step 3: Cross multiply
    350,322.69x = 481,659.65 × 311,709.45
  4. Step 4: Simplify right side
    350,322.69x = 150,137,865,367.97
  5. Step 5: Solve for x
    x = 150,137,865,367.97/350,322.69
  6. Step 6: Final answer
    x = 428,570.20

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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.