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Finding the Fourth Proportional to 324,370.40, 486,555.60 and 305,999.60

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Solution

The fourth proportional to 324,370.40, 486,555.60 and 305,999.60 is: 458,999.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,370.40 : 486,555.60 = 305,999.60 : x
  2. Step 2: Convert to fraction form
    324,370.40/486,555.60 = 305,999.60/x
  3. Step 3: Cross multiply
    324,370.40x = 486,555.60 × 305,999.60
  4. Step 4: Simplify right side
    324,370.40x = 148,885,818,977.76
  5. Step 5: Solve for x
    x = 148,885,818,977.76/324,370.40
  6. Step 6: Final answer
    x = 458,999.40

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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.