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Finding the Fourth Proportional to 282,886.26, 390,383.16 and 155,561.85

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Solution

The fourth proportional to 282,886.26, 390,383.16 and 155,561.85 is: 214,675.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,886.26 : 390,383.16 = 155,561.85 : x
  2. Step 2: Convert to fraction form
    282,886.26/390,383.16 = 155,561.85/x
  3. Step 3: Cross multiply
    282,886.26x = 390,383.16 × 155,561.85
  4. Step 4: Simplify right side
    282,886.26x = 60,728,726,578.45
  5. Step 5: Solve for x
    x = 60,728,726,578.45/282,886.26
  6. Step 6: Final answer
    x = 214,675.42

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.