Home / 278,194.03-383,903.21-157,330.78

Finding the Fourth Proportional to 278,194.03, 383,903.21 and 157,330.78

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Solution

The fourth proportional to 278,194.03, 383,903.21 and 157,330.78 is: 217,113.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,194.03 : 383,903.21 = 157,330.78 : x
  2. Step 2: Convert to fraction form
    278,194.03/383,903.21 = 157,330.78/x
  3. Step 3: Cross multiply
    278,194.03x = 383,903.21 × 157,330.78
  4. Step 4: Simplify right side
    278,194.03x = 60,399,790,907.37
  5. Step 5: Solve for x
    x = 60,399,790,907.37/278,194.03
  6. Step 6: Final answer
    x = 217,113.90

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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.