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Finding the Fourth Proportional to 219,258.21, 328,918.48 and 67,467.88

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Solution

The fourth proportional to 219,258.21, 328,918.48 and 67,467.88 is: 101,211.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,258.21 : 328,918.48 = 67,467.88 : x
  2. Step 2: Convert to fraction form
    219,258.21/328,918.48 = 67,467.88/x
  3. Step 3: Cross multiply
    219,258.21x = 328,918.48 × 67,467.88
  4. Step 4: Simplify right side
    219,258.21x = 22,191,433,705.98
  5. Step 5: Solve for x
    x = 22,191,433,705.98/219,258.21
  6. Step 6: Final answer
    x = 101,211.41

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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.