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Finding the Fourth Proportional to 255,892.37, 383,752.77 and 85,074.67

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Solution

The fourth proportional to 255,892.37, 383,752.77 and 85,074.67 is: 127,583.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,892.37 : 383,752.77 = 85,074.67 : x
  2. Step 2: Convert to fraction form
    255,892.37/383,752.77 = 85,074.67/x
  3. Step 3: Cross multiply
    255,892.37x = 383,752.77 × 85,074.67
  4. Step 4: Simplify right side
    255,892.37x = 32,647,640,908.54
  5. Step 5: Solve for x
    x = 32,647,640,908.54/255,892.37
  6. Step 6: Final answer
    x = 127,583.49

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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.