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Finding the Fourth Proportional to 324,097.20, 486,145.80 and 321,764.40

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Solution

The fourth proportional to 324,097.20, 486,145.80 and 321,764.40 is: 482,646.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,097.20 : 486,145.80 = 321,764.40 : x
  2. Step 2: Convert to fraction form
    324,097.20/486,145.80 = 321,764.40/x
  3. Step 3: Cross multiply
    324,097.20x = 486,145.80 × 321,764.40
  4. Step 4: Simplify right side
    324,097.20x = 156,424,411,649.52
  5. Step 5: Solve for x
    x = 156,424,411,649.52/324,097.20
  6. Step 6: Final answer
    x = 482,646.60

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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.