Home / 428,650.67-642,573.68-144,142.25

Finding the Fourth Proportional to 428,650.67, 642,573.68 and 144,142.25

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Solution

The fourth proportional to 428,650.67, 642,573.68 and 144,142.25 is: 216,078.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,650.67 : 642,573.68 = 144,142.25 : x
  2. Step 2: Convert to fraction form
    428,650.67/642,573.68 = 144,142.25/x
  3. Step 3: Cross multiply
    428,650.67x = 642,573.68 × 144,142.25
  4. Step 4: Simplify right side
    428,650.67x = 92,622,015,706.88
  5. Step 5: Solve for x
    x = 92,622,015,706.88/428,650.67
  6. Step 6: Final answer
    x = 216,078.09

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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.