Home / 321,922.20-483,272.10-319,589.40

Finding the Fourth Proportional to 321,922.20, 483,272.10 and 319,589.40

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Solution

The fourth proportional to 321,922.20, 483,272.10 and 319,589.40 is: 479,770.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,922.20 : 483,272.10 = 319,589.40 : x
  2. Step 2: Convert to fraction form
    321,922.20/483,272.10 = 319,589.40/x
  3. Step 3: Cross multiply
    321,922.20x = 483,272.10 × 319,589.40
  4. Step 4: Simplify right side
    321,922.20x = 154,448,640,475.74
  5. Step 5: Solve for x
    x = 154,448,640,475.74/321,922.20
  6. Step 6: Final answer
    x = 479,770.08

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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.