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Finding the Fourth Proportional to 275,169.54, 412,685.94 and 155,279.12

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Solution

The fourth proportional to 275,169.54, 412,685.94 and 155,279.12 is: 232,880.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,169.54 : 412,685.94 = 155,279.12 : x
  2. Step 2: Convert to fraction form
    275,169.54/412,685.94 = 155,279.12/x
  3. Step 3: Cross multiply
    275,169.54x = 412,685.94 × 155,279.12
  4. Step 4: Simplify right side
    275,169.54x = 64,081,509,599.57
  5. Step 5: Solve for x
    x = 64,081,509,599.57/275,169.54
  6. Step 6: Final answer
    x = 232,880.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.