Home / 290,309.07-400,616.24-162,990.03

Finding the Fourth Proportional to 290,309.07, 400,616.24 and 162,990.03

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Solution

The fourth proportional to 290,309.07, 400,616.24 and 162,990.03 is: 224,920.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,309.07 : 400,616.24 = 162,990.03 : x
  2. Step 2: Convert to fraction form
    290,309.07/400,616.24 = 162,990.03/x
  3. Step 3: Cross multiply
    290,309.07x = 400,616.24 × 162,990.03
  4. Step 4: Simplify right side
    290,309.07x = 65,296,452,161.14
  5. Step 5: Solve for x
    x = 65,296,452,161.14/290,309.07
  6. Step 6: Final answer
    x = 224,920.47

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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.