Home / 289,239.06-399,145.46-161,919.20

Finding the Fourth Proportional to 289,239.06, 399,145.46 and 161,919.20

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Solution

The fourth proportional to 289,239.06, 399,145.46 and 161,919.20 is: 223,446.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,239.06 : 399,145.46 = 161,919.20 : x
  2. Step 2: Convert to fraction form
    289,239.06/399,145.46 = 161,919.20/x
  3. Step 3: Cross multiply
    289,239.06x = 399,145.46 × 161,919.20
  4. Step 4: Simplify right side
    289,239.06x = 64,629,313,566.83
  5. Step 5: Solve for x
    x = 64,629,313,566.83/289,239.06
  6. Step 6: Final answer
    x = 223,446.01

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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.