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Finding the Fourth Proportional to 282,428.52, 389,758.12 and 155,106.84

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Solution

The fourth proportional to 282,428.52, 389,758.12 and 155,106.84 is: 214,051.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,428.52 : 389,758.12 = 155,106.84 : x
  2. Step 2: Convert to fraction form
    282,428.52/389,758.12 = 155,106.84/x
  3. Step 3: Cross multiply
    282,428.52x = 389,758.12 × 155,106.84
  4. Step 4: Simplify right side
    282,428.52x = 60,454,150,357.54
  5. Step 5: Solve for x
    x = 60,454,150,357.54/282,428.52
  6. Step 6: Final answer
    x = 214,051.15

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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.