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Finding the Fourth Proportional to 401,834.60, 603,212.70 and 235,716.20

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Solution

The fourth proportional to 401,834.60, 603,212.70 and 235,716.20 is: 353,844.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,834.60 : 603,212.70 = 235,716.20 : x
  2. Step 2: Convert to fraction form
    401,834.60/603,212.70 = 235,716.20/x
  3. Step 3: Cross multiply
    401,834.60x = 603,212.70 × 235,716.20
  4. Step 4: Simplify right side
    401,834.60x = 142,187,005,435.74
  5. Step 5: Solve for x
    x = 142,187,005,435.74/401,834.60
  6. Step 6: Final answer
    x = 353,844.61

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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.