Home / 420,255.15-629,804.52-180,081.56

Finding the Fourth Proportional to 420,255.15, 629,804.52 and 180,081.56

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Solution

The fourth proportional to 420,255.15, 629,804.52 and 180,081.56 is: 269,874.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,255.15 : 629,804.52 = 180,081.56 : x
  2. Step 2: Convert to fraction form
    420,255.15/629,804.52 = 180,081.56/x
  3. Step 3: Cross multiply
    420,255.15x = 629,804.52 × 180,081.56
  4. Step 4: Simplify right side
    420,255.15x = 113,416,177,307.63
  5. Step 5: Solve for x
    x = 113,416,177,307.63/420,255.15
  6. Step 6: Final answer
    x = 269,874.57

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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.