Home / 457,005.12-685,540.32-141,421.44

Finding the Fourth Proportional to 457,005.12, 685,540.32 and 141,421.44

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Solution

The fourth proportional to 457,005.12, 685,540.32 and 141,421.44 is: 212,142.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,005.12 : 685,540.32 = 141,421.44 : x
  2. Step 2: Convert to fraction form
    457,005.12/685,540.32 = 141,421.44/x
  3. Step 3: Cross multiply
    457,005.12x = 685,540.32 × 141,421.44
  4. Step 4: Simplify right side
    457,005.12x = 96,950,099,232.46
  5. Step 5: Solve for x
    x = 96,950,099,232.46/457,005.12
  6. Step 6: Final answer
    x = 212,142.26

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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.