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Finding the Fourth Proportional to 449,910.36, 620,903.52 and 258,919.56

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Solution

The fourth proportional to 449,910.36, 620,903.52 and 258,919.56 is: 357,324.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,910.36 : 620,903.52 = 258,919.56 : x
  2. Step 2: Convert to fraction form
    449,910.36/620,903.52 = 258,919.56/x
  3. Step 3: Cross multiply
    449,910.36x = 620,903.52 × 258,919.56
  4. Step 4: Simplify right side
    449,910.36x = 160,764,066,200.85
  5. Step 5: Solve for x
    x = 160,764,066,200.85/449,910.36
  6. Step 6: Final answer
    x = 357,324.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.