Home / 285,226.20-427,806.36-74,880.60

Finding the Fourth Proportional to 285,226.20, 427,806.36 and 74,880.60

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Solution

The fourth proportional to 285,226.20, 427,806.36 and 74,880.60 is: 112,312.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,226.20 : 427,806.36 = 74,880.60 : x
  2. Step 2: Convert to fraction form
    285,226.20/427,806.36 = 74,880.60/x
  3. Step 3: Cross multiply
    285,226.20x = 427,806.36 × 74,880.60
  4. Step 4: Simplify right side
    285,226.20x = 32,034,396,920.62
  5. Step 5: Solve for x
    x = 32,034,396,920.62/285,226.20
  6. Step 6: Final answer
    x = 112,312.25

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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.