Home / 320,305.64-442,015.34-177,071.72

Finding the Fourth Proportional to 320,305.64, 442,015.34 and 177,071.72

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Solution

The fourth proportional to 320,305.64, 442,015.34 and 177,071.72 is: 244,355.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,305.64 : 442,015.34 = 177,071.72 : x
  2. Step 2: Convert to fraction form
    320,305.64/442,015.34 = 177,071.72/x
  3. Step 3: Cross multiply
    320,305.64x = 442,015.34 × 177,071.72
  4. Step 4: Simplify right side
    320,305.64x = 78,268,416,520.18
  5. Step 5: Solve for x
    x = 78,268,416,520.18/320,305.64
  6. Step 6: Final answer
    x = 244,355.41

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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.