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Finding the Fourth Proportional to 439,457.70, 659,249.72 and 135,875.53

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Solution

The fourth proportional to 439,457.70, 659,249.72 and 135,875.53 is: 203,832.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,457.70 : 659,249.72 = 135,875.53 : x
  2. Step 2: Convert to fraction form
    439,457.70/659,249.72 = 135,875.53/x
  3. Step 3: Cross multiply
    439,457.70x = 659,249.72 × 135,875.53
  4. Step 4: Simplify right side
    439,457.70x = 89,575,907,626.33
  5. Step 5: Solve for x
    x = 89,575,907,626.33/439,457.70
  6. Step 6: Final answer
    x = 203,832.83

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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.