Home / 289,109.58-398,975.96-158,285.05

Finding the Fourth Proportional to 289,109.58, 398,975.96 and 158,285.05

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Solution

The fourth proportional to 289,109.58, 398,975.96 and 158,285.05 is: 218,435.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,109.58 : 398,975.96 = 158,285.05 : x
  2. Step 2: Convert to fraction form
    289,109.58/398,975.96 = 158,285.05/x
  3. Step 3: Cross multiply
    289,109.58x = 398,975.96 × 158,285.05
  4. Step 4: Simplify right side
    289,109.58x = 63,151,929,777.40
  5. Step 5: Solve for x
    x = 63,151,929,777.40/289,109.58
  6. Step 6: Final answer
    x = 218,435.96

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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.