Home / 356,270.32-491,643.36-203,305.72

Finding the Fourth Proportional to 356,270.32, 491,643.36 and 203,305.72

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Solution

The fourth proportional to 356,270.32, 491,643.36 and 203,305.72 is: 280,556.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,270.32 : 491,643.36 = 203,305.72 : x
  2. Step 2: Convert to fraction form
    356,270.32/491,643.36 = 203,305.72/x
  3. Step 3: Cross multiply
    356,270.32x = 491,643.36 × 203,305.72
  4. Step 4: Simplify right side
    356,270.32x = 99,953,907,288.02
  5. Step 5: Solve for x
    x = 99,953,907,288.02/356,270.32
  6. Step 6: Final answer
    x = 280,556.37

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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.