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Finding the Fourth Proportional to 254,477.62, 381,450.75 and 85,939.84

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Solution

The fourth proportional to 254,477.62, 381,450.75 and 85,939.84 is: 128,820.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,477.62 : 381,450.75 = 85,939.84 : x
  2. Step 2: Convert to fraction form
    254,477.62/381,450.75 = 85,939.84/x
  3. Step 3: Cross multiply
    254,477.62x = 381,450.75 × 85,939.84
  4. Step 4: Simplify right side
    254,477.62x = 32,781,816,422.88
  5. Step 5: Solve for x
    x = 32,781,816,422.88/254,477.62
  6. Step 6: Final answer
    x = 128,820.04

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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.