Home / 221,999.73-306,353.40-121,395.57

Finding the Fourth Proportional to 221,999.73, 306,353.40 and 121,395.57

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Solution

The fourth proportional to 221,999.73, 306,353.40 and 121,395.57 is: 167,522.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,999.73 : 306,353.40 = 121,395.57 : x
  2. Step 2: Convert to fraction form
    221,999.73/306,353.40 = 121,395.57/x
  3. Step 3: Cross multiply
    221,999.73x = 306,353.40 × 121,395.57
  4. Step 4: Simplify right side
    221,999.73x = 37,189,945,614.44
  5. Step 5: Solve for x
    x = 37,189,945,614.44/221,999.73
  6. Step 6: Final answer
    x = 167,522.48

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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.