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Finding the Fourth Proportional to 309,630.88, 427,249.26 and 171,807.52

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Solution

The fourth proportional to 309,630.88, 427,249.26 and 171,807.52 is: 237,071.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,630.88 : 427,249.26 = 171,807.52 : x
  2. Step 2: Convert to fraction form
    309,630.88/427,249.26 = 171,807.52/x
  3. Step 3: Cross multiply
    309,630.88x = 427,249.26 × 171,807.52
  4. Step 4: Simplify right side
    309,630.88x = 73,404,635,782.44
  5. Step 5: Solve for x
    x = 73,404,635,782.44/309,630.88
  6. Step 6: Final answer
    x = 237,071.43

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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.