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Finding the Fourth Proportional to 211,212.80, 317,164.80 and 141,401.60

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Solution

The fourth proportional to 211,212.80, 317,164.80 and 141,401.60 is: 212,333.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,212.80 : 317,164.80 = 141,401.60 : x
  2. Step 2: Convert to fraction form
    211,212.80/317,164.80 = 141,401.60/x
  3. Step 3: Cross multiply
    211,212.80x = 317,164.80 × 141,401.60
  4. Step 4: Simplify right side
    211,212.80x = 44,847,610,183.68
  5. Step 5: Solve for x
    x = 44,847,610,183.68/211,212.80
  6. Step 6: Final answer
    x = 212,333.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.