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Finding the Fourth Proportional to 324,907.20, 487,287.90 and 213,370.20

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Solution

The fourth proportional to 324,907.20, 487,287.90 and 213,370.20 is: 320,007.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,907.20 : 487,287.90 = 213,370.20 : x
  2. Step 2: Convert to fraction form
    324,907.20/487,287.90 = 213,370.20/x
  3. Step 3: Cross multiply
    324,907.20x = 487,287.90 × 213,370.20
  4. Step 4: Simplify right side
    324,907.20x = 103,972,716,680.58
  5. Step 5: Solve for x
    x = 103,972,716,680.58/324,907.20
  6. Step 6: Final answer
    x = 320,007.43

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1.5x scale

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.