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Finding the Fourth Proportional to 324,014.20, 486,021.30 and 288,584.80

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Solution

The fourth proportional to 324,014.20, 486,021.30 and 288,584.80 is: 432,877.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,014.20 : 486,021.30 = 288,584.80 : x
  2. Step 2: Convert to fraction form
    324,014.20/486,021.30 = 288,584.80/x
  3. Step 3: Cross multiply
    324,014.20x = 486,021.30 × 288,584.80
  4. Step 4: Simplify right side
    324,014.20x = 140,258,359,656.24
  5. Step 5: Solve for x
    x = 140,258,359,656.24/324,014.20
  6. Step 6: Final answer
    x = 432,877.20

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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.