Home / 209,961.23-290,023.04-155,623.55

Finding the Fourth Proportional to 209,961.23, 290,023.04 and 155,623.55

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Solution

The fourth proportional to 209,961.23, 290,023.04 and 155,623.55 is: 214,965.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,961.23 : 290,023.04 = 155,623.55 : x
  2. Step 2: Convert to fraction form
    209,961.23/290,023.04 = 155,623.55/x
  3. Step 3: Cross multiply
    209,961.23x = 290,023.04 × 155,623.55
  4. Step 4: Simplify right side
    209,961.23x = 45,134,414,005.54
  5. Step 5: Solve for x
    x = 45,134,414,005.54/209,961.23
  6. Step 6: Final answer
    x = 214,965.47

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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.