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Finding the Fourth Proportional to 282,336.67, 389,625.24 and 155,020.45

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Solution

The fourth proportional to 282,336.67, 389,625.24 and 155,020.45 is: 213,928.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,336.67 : 389,625.24 = 155,020.45 : x
  2. Step 2: Convert to fraction form
    282,336.67/389,625.24 = 155,020.45/x
  3. Step 3: Cross multiply
    282,336.67x = 389,625.24 × 155,020.45
  4. Step 4: Simplify right side
    282,336.67x = 60,399,880,036.16
  5. Step 5: Solve for x
    x = 60,399,880,036.16/282,336.67
  6. Step 6: Final answer
    x = 213,928.57

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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.