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Finding the Fourth Proportional to 378,633.64, 568,049.28 and 141,980.80

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Solution

The fourth proportional to 378,633.64, 568,049.28 and 141,980.80 is: 213,008.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,633.64 : 568,049.28 = 141,980.80 : x
  2. Step 2: Convert to fraction form
    378,633.64/568,049.28 = 141,980.80/x
  3. Step 3: Cross multiply
    378,633.64x = 568,049.28 × 141,980.80
  4. Step 4: Simplify right side
    378,633.64x = 80,652,091,213.82
  5. Step 5: Solve for x
    x = 80,652,091,213.82/378,633.64
  6. Step 6: Final answer
    x = 213,008.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.