Home / 222,111.32-306,520.84-121,509.32

Finding the Fourth Proportional to 222,111.32, 306,520.84 and 121,509.32

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Solution

The fourth proportional to 222,111.32, 306,520.84 and 121,509.32 is: 167,686.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,111.32 : 306,520.84 = 121,509.32 : x
  2. Step 2: Convert to fraction form
    222,111.32/306,520.84 = 121,509.32/x
  3. Step 3: Cross multiply
    222,111.32x = 306,520.84 × 121,509.32
  4. Step 4: Simplify right side
    222,111.32x = 37,245,138,834.23
  5. Step 5: Solve for x
    x = 37,245,138,834.23/222,111.32
  6. Step 6: Final answer
    x = 167,686.81

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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.