Home / 388,921.50-536,759.19-219,186.54

Finding the Fourth Proportional to 388,921.50, 536,759.19 and 219,186.54

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Solution

The fourth proportional to 388,921.50, 536,759.19 and 219,186.54 is: 302,504.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,921.50 : 536,759.19 = 219,186.54 : x
  2. Step 2: Convert to fraction form
    388,921.50/536,759.19 = 219,186.54/x
  3. Step 3: Cross multiply
    388,921.50x = 536,759.19 × 219,186.54
  4. Step 4: Simplify right side
    388,921.50x = 117,650,389,669.30
  5. Step 5: Solve for x
    x = 117,650,389,669.30/388,921.50
  6. Step 6: Final answer
    x = 302,504.21

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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.