Home / 210,640.20-290,683.50-115,147.32

Finding the Fourth Proportional to 210,640.20, 290,683.50 and 115,147.32

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Solution

The fourth proportional to 210,640.20, 290,683.50 and 115,147.32 is: 158,903.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,640.20 : 290,683.50 = 115,147.32 : x
  2. Step 2: Convert to fraction form
    210,640.20/290,683.50 = 115,147.32/x
  3. Step 3: Cross multiply
    210,640.20x = 290,683.50 × 115,147.32
  4. Step 4: Simplify right side
    210,640.20x = 33,471,425,993.22
  5. Step 5: Solve for x
    x = 33,471,425,993.22/210,640.20
  6. Step 6: Final answer
    x = 158,903.31

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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.