Home / 389,121.21-536,995.53-219,355.29

Finding the Fourth Proportional to 389,121.21, 536,995.53 and 219,355.29

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Solution

The fourth proportional to 389,121.21, 536,995.53 and 219,355.29 is: 302,714.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,121.21 : 536,995.53 = 219,355.29 : x
  2. Step 2: Convert to fraction form
    389,121.21/536,995.53 = 219,355.29/x
  3. Step 3: Cross multiply
    389,121.21x = 536,995.53 × 219,355.29
  4. Step 4: Simplify right side
    389,121.21x = 117,792,810,211.85
  5. Step 5: Solve for x
    x = 117,792,810,211.85/389,121.21
  6. Step 6: Final answer
    x = 302,714.96

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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.