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Finding the Fourth Proportional to 324,367.20, 486,477.90 and 212,830.20

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Solution

The fourth proportional to 324,367.20, 486,477.90 and 212,830.20 is: 319,197.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,367.20 : 486,477.90 = 212,830.20 : x
  2. Step 2: Convert to fraction form
    324,367.20/486,477.90 = 212,830.20/x
  3. Step 3: Cross multiply
    324,367.20x = 486,477.90 × 212,830.20
  4. Step 4: Simplify right side
    324,367.20x = 103,537,188,752.58
  5. Step 5: Solve for x
    x = 103,537,188,752.58/324,367.20
  6. Step 6: Final answer
    x = 319,197.47

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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.