Home / 278,022.18-383,636.26-197,420.29

Finding the Fourth Proportional to 278,022.18, 383,636.26 and 197,420.29

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Solution

The fourth proportional to 278,022.18, 383,636.26 and 197,420.29 is: 272,415.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,022.18 : 383,636.26 = 197,420.29 : x
  2. Step 2: Convert to fraction form
    278,022.18/383,636.26 = 197,420.29/x
  3. Step 3: Cross multiply
    278,022.18x = 383,636.26 × 197,420.29
  4. Step 4: Simplify right side
    278,022.18x = 75,737,581,703.72
  5. Step 5: Solve for x
    x = 75,737,581,703.72/278,022.18
  6. Step 6: Final answer
    x = 272,415.61

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1.5x scale

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.