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Finding the Fourth Proportional to 276,636.60, 381,754.73 and 155,779.34

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Solution

The fourth proportional to 276,636.60, 381,754.73 and 155,779.34 is: 214,973.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,636.60 : 381,754.73 = 155,779.34 : x
  2. Step 2: Convert to fraction form
    276,636.60/381,754.73 = 155,779.34/x
  3. Step 3: Cross multiply
    276,636.60x = 381,754.73 × 155,779.34
  4. Step 4: Simplify right side
    276,636.60x = 59,469,498,361.95
  5. Step 5: Solve for x
    x = 59,469,498,361.95/276,636.60
  6. Step 6: Final answer
    x = 214,973.36

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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.