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Finding the Fourth Proportional to 278,321.94, 383,911.65 and 244,303.56

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Solution

The fourth proportional to 278,321.94, 383,911.65 and 244,303.56 is: 336,987.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,321.94 : 383,911.65 = 244,303.56 : x
  2. Step 2: Convert to fraction form
    278,321.94/383,911.65 = 244,303.56/x
  3. Step 3: Cross multiply
    278,321.94x = 383,911.65 × 244,303.56
  4. Step 4: Simplify right side
    278,321.94x = 93,790,982,820.47
  5. Step 5: Solve for x
    x = 93,790,982,820.47/278,321.94
  6. Step 6: Final answer
    x = 336,987.39

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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.