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Finding the Fourth Proportional to 324,371.20, 486,556.80 and 306,000.40

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Solution

The fourth proportional to 324,371.20, 486,556.80 and 306,000.40 is: 459,000.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,371.20 : 486,556.80 = 306,000.40 : x
  2. Step 2: Convert to fraction form
    324,371.20/486,556.80 = 306,000.40/x
  3. Step 3: Cross multiply
    324,371.20x = 486,556.80 × 306,000.40
  4. Step 4: Simplify right side
    324,371.20x = 148,886,575,422.72
  5. Step 5: Solve for x
    x = 148,886,575,422.72/324,371.20
  6. Step 6: Final answer
    x = 459,000.60

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Similar ratio
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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.