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Finding the Fourth Proportional to 282,359.19, 389,661.27 and 155,033.67

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Solution

The fourth proportional to 282,359.19, 389,661.27 and 155,033.67 is: 213,949.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,359.19 : 389,661.27 = 155,033.67 : x
  2. Step 2: Convert to fraction form
    282,359.19/389,661.27 = 155,033.67/x
  3. Step 3: Cross multiply
    282,359.19x = 389,661.27 × 155,033.67
  4. Step 4: Simplify right side
    282,359.19x = 60,410,616,744.96
  5. Step 5: Solve for x
    x = 60,410,616,744.96/282,359.19
  6. Step 6: Final answer
    x = 213,949.53

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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.