Home / 427,790.53-642,316.60-238,620.50

Finding the Fourth Proportional to 427,790.53, 642,316.60 and 238,620.50

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Solution

The fourth proportional to 427,790.53, 642,316.60 and 238,620.50 is: 358,282.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,790.53 : 642,316.60 = 238,620.50 : x
  2. Step 2: Convert to fraction form
    427,790.53/642,316.60 = 238,620.50/x
  3. Step 3: Cross multiply
    427,790.53x = 642,316.60 × 238,620.50
  4. Step 4: Simplify right side
    427,790.53x = 153,269,907,745.68
  5. Step 5: Solve for x
    x = 153,269,907,745.68/427,790.53
  6. Step 6: Final answer
    x = 358,282.61

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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.