Home / 313,981.20-434,435.04-273,778.80

Finding the Fourth Proportional to 313,981.20, 434,435.04 and 273,778.80

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Solution

The fourth proportional to 313,981.20, 434,435.04 and 273,778.80 is: 378,809.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,981.20 : 434,435.04 = 273,778.80 : x
  2. Step 2: Convert to fraction form
    313,981.20/434,435.04 = 273,778.80/x
  3. Step 3: Cross multiply
    313,981.20x = 434,435.04 × 273,778.80
  4. Step 4: Simplify right side
    313,981.20x = 118,939,103,929.15
  5. Step 5: Solve for x
    x = 118,939,103,929.15/313,981.20
  6. Step 6: Final answer
    x = 378,809.64

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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.