Home / 289,785.20-433,986.60-141,868.40

Finding the Fourth Proportional to 289,785.20, 433,986.60 and 141,868.40

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Solution

The fourth proportional to 289,785.20, 433,986.60 and 141,868.40 is: 212,464.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,785.20 : 433,986.60 = 141,868.40 : x
  2. Step 2: Convert to fraction form
    289,785.20/433,986.60 = 141,868.40/x
  3. Step 3: Cross multiply
    289,785.20x = 433,986.60 × 141,868.40
  4. Step 4: Simplify right side
    289,785.20x = 61,568,984,563.44
  5. Step 5: Solve for x
    x = 61,568,984,563.44/289,785.20
  6. Step 6: Final answer
    x = 212,464.21

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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.