Home / 389,134.08-536,997.87-219,368.34

Finding the Fourth Proportional to 389,134.08, 536,997.87 and 219,368.34

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Solution

The fourth proportional to 389,134.08, 536,997.87 and 219,368.34 is: 302,724.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,134.08 : 536,997.87 = 219,368.34 : x
  2. Step 2: Convert to fraction form
    389,134.08/536,997.87 = 219,368.34/x
  3. Step 3: Cross multiply
    389,134.08x = 536,997.87 × 219,368.34
  4. Step 4: Simplify right side
    389,134.08x = 117,800,331,325.44
  5. Step 5: Solve for x
    x = 117,800,331,325.44/389,134.08
  6. Step 6: Final answer
    x = 302,724.27

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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.