Home / 324,091.20-486,136.80-305,720.40

Finding the Fourth Proportional to 324,091.20, 486,136.80 and 305,720.40

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Solution

The fourth proportional to 324,091.20, 486,136.80 and 305,720.40 is: 458,580.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,091.20 : 486,136.80 = 305,720.40 : x
  2. Step 2: Convert to fraction form
    324,091.20/486,136.80 = 305,720.40/x
  3. Step 3: Cross multiply
    324,091.20x = 486,136.80 × 305,720.40
  4. Step 4: Simplify right side
    324,091.20x = 148,621,936,950.72
  5. Step 5: Solve for x
    x = 148,621,936,950.72/324,091.20
  6. Step 6: Final answer
    x = 458,580.60

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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.