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Finding the Fourth Proportional to 271,790.77, 407,671.75 and 84,780.85

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Solution

The fourth proportional to 271,790.77, 407,671.75 and 84,780.85 is: 127,166.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,790.77 : 407,671.75 = 84,780.85 : x
  2. Step 2: Convert to fraction form
    271,790.77/407,671.75 = 84,780.85/x
  3. Step 3: Cross multiply
    271,790.77x = 407,671.75 × 84,780.85
  4. Step 4: Simplify right side
    271,790.77x = 34,562,757,485.99
  5. Step 5: Solve for x
    x = 34,562,757,485.99/271,790.77
  6. Step 6: Final answer
    x = 127,166.78

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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.