Home / 282,338.12-389,627.36-155,021.96

Finding the Fourth Proportional to 282,338.12, 389,627.36 and 155,021.96

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Solution

The fourth proportional to 282,338.12, 389,627.36 and 155,021.96 is: 213,930.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,338.12 : 389,627.36 = 155,021.96 : x
  2. Step 2: Convert to fraction form
    282,338.12/389,627.36 = 155,021.96/x
  3. Step 3: Cross multiply
    282,338.12x = 389,627.36 × 155,021.96
  4. Step 4: Simplify right side
    282,338.12x = 60,400,797,016.83
  5. Step 5: Solve for x
    x = 60,400,797,016.83/282,338.12
  6. Step 6: Final answer
    x = 213,930.72

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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.