Home / 289,007.12-398,845.32-161,675.12

Finding the Fourth Proportional to 289,007.12, 398,845.32 and 161,675.12

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Solution

The fourth proportional to 289,007.12, 398,845.32 and 161,675.12 is: 223,120.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,007.12 : 398,845.32 = 161,675.12 : x
  2. Step 2: Convert to fraction form
    289,007.12/398,845.32 = 161,675.12/x
  3. Step 3: Cross multiply
    289,007.12x = 398,845.32 × 161,675.12
  4. Step 4: Simplify right side
    289,007.12x = 64,483,364,972.44
  5. Step 5: Solve for x
    x = 64,483,364,972.44/289,007.12
  6. Step 6: Final answer
    x = 223,120.33

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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.