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Finding the Fourth Proportional to 278,172.21, 383,877.86 and 150,847.77

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Solution

The fourth proportional to 278,172.21, 383,877.86 and 150,847.77 is: 208,170.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,172.21 : 383,877.86 = 150,847.77 : x
  2. Step 2: Convert to fraction form
    278,172.21/383,877.86 = 150,847.77/x
  3. Step 3: Cross multiply
    278,172.21x = 383,877.86 × 150,847.77
  4. Step 4: Simplify right side
    278,172.21x = 57,907,119,133.37
  5. Step 5: Solve for x
    x = 57,907,119,133.37/278,172.21
  6. Step 6: Final answer
    x = 208,170.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.