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Finding the Fourth Proportional to 275,790.70, 380,591.20 and 153,283.06

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Solution

The fourth proportional to 275,790.70, 380,591.20 and 153,283.06 is: 211,530.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,790.70 : 380,591.20 = 153,283.06 : x
  2. Step 2: Convert to fraction form
    275,790.70/380,591.20 = 153,283.06/x
  3. Step 3: Cross multiply
    275,790.70x = 380,591.20 × 153,283.06
  4. Step 4: Simplify right side
    275,790.70x = 58,338,183,745.07
  5. Step 5: Solve for x
    x = 58,338,183,745.07/275,790.70
  6. Step 6: Final answer
    x = 211,530.64

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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.