Home / 330,021.42-494,145.21-209,425.45

Finding the Fourth Proportional to 330,021.42, 494,145.21 and 209,425.45

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Solution

The fourth proportional to 330,021.42, 494,145.21 and 209,425.45 is: 313,575.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,021.42 : 494,145.21 = 209,425.45 : x
  2. Step 2: Convert to fraction form
    330,021.42/494,145.21 = 209,425.45/x
  3. Step 3: Cross multiply
    330,021.42x = 494,145.21 × 209,425.45
  4. Step 4: Simplify right side
    330,021.42x = 103,486,582,268.08
  5. Step 5: Solve for x
    x = 103,486,582,268.08/330,021.42
  6. Step 6: Final answer
    x = 313,575.35

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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.