Home / 212,725.20-318,431.70-189,105.60

Finding the Fourth Proportional to 212,725.20, 318,431.70 and 189,105.60

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Solution

The fourth proportional to 212,725.20, 318,431.70 and 189,105.60 is: 283,075.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,725.20 : 318,431.70 = 189,105.60 : x
  2. Step 2: Convert to fraction form
    212,725.20/318,431.70 = 189,105.60/x
  3. Step 3: Cross multiply
    212,725.20x = 318,431.70 × 189,105.60
  4. Step 4: Simplify right side
    212,725.20x = 60,217,217,687.52
  5. Step 5: Solve for x
    x = 60,217,217,687.52/212,725.20
  6. Step 6: Final answer
    x = 283,075.15

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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.