Home / 279,145.03-385,219.07-151,822.75

Finding the Fourth Proportional to 279,145.03, 385,219.07 and 151,822.75

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Solution

The fourth proportional to 279,145.03, 385,219.07 and 151,822.75 is: 209,514.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,145.03 : 385,219.07 = 151,822.75 : x
  2. Step 2: Convert to fraction form
    279,145.03/385,219.07 = 151,822.75/x
  3. Step 3: Cross multiply
    279,145.03x = 385,219.07 × 151,822.75
  4. Step 4: Simplify right side
    279,145.03x = 58,485,016,837.68
  5. Step 5: Solve for x
    x = 58,485,016,837.68/279,145.03
  6. Step 6: Final answer
    x = 209,514.81

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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.