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Finding the Fourth Proportional to 382,036.37, 572,698.22 and 129,141

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Solution

The fourth proportional to 382,036.37, 572,698.22 and 129,141 is: 193,591.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,036.37 : 572,698.22 = 129,141 : x
  2. Step 2: Convert to fraction form
    382,036.37/572,698.22 = 129,141/x
  3. Step 3: Cross multiply
    382,036.37x = 572,698.22 × 129,141
  4. Step 4: Simplify right side
    382,036.37x = 73,958,820,183.32
  5. Step 5: Solve for x
    x = 73,958,820,183.32/382,036.37
  6. Step 6: Final answer
    x = 193,591.05

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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.