Home / 389,128.59-536,997.44-219,362.72

Finding the Fourth Proportional to 389,128.59, 536,997.44 and 219,362.72

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Solution

The fourth proportional to 389,128.59, 536,997.44 and 219,362.72 is: 302,720.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,128.59 : 536,997.44 = 219,362.72 : x
  2. Step 2: Convert to fraction form
    389,128.59/536,997.44 = 219,362.72/x
  3. Step 3: Cross multiply
    389,128.59x = 536,997.44 × 219,362.72
  4. Step 4: Simplify right side
    389,128.59x = 117,797,216,934.86
  5. Step 5: Solve for x
    x = 117,797,216,934.86/389,128.59
  6. Step 6: Final answer
    x = 302,720.54

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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.