Home / 278,681.44-384,576.24-156,172

Finding the Fourth Proportional to 278,681.44, 384,576.24 and 156,172

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Solution

The fourth proportional to 278,681.44, 384,576.24 and 156,172 is: 215,515.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,681.44 : 384,576.24 = 156,172 : x
  2. Step 2: Convert to fraction form
    278,681.44/384,576.24 = 156,172/x
  3. Step 3: Cross multiply
    278,681.44x = 384,576.24 × 156,172
  4. Step 4: Simplify right side
    278,681.44x = 60,060,040,553.28
  5. Step 5: Solve for x
    x = 60,060,040,553.28/278,681.44
  6. Step 6: Final answer
    x = 215,515.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.