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Finding the Fourth Proportional to 219,191.94, 302,485.32 and 122,395.32

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Solution

The fourth proportional to 219,191.94, 302,485.32 and 122,395.32 is: 168,905.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,191.94 : 302,485.32 = 122,395.32 : x
  2. Step 2: Convert to fraction form
    219,191.94/302,485.32 = 122,395.32/x
  3. Step 3: Cross multiply
    219,191.94x = 302,485.32 × 122,395.32
  4. Step 4: Simplify right side
    219,191.94x = 37,022,787,536.70
  5. Step 5: Solve for x
    x = 37,022,787,536.70/219,191.94
  6. Step 6: Final answer
    x = 168,905.79

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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.