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Finding the Fourth Proportional to 315,084.08, 434,814.12 and 171,843.44

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Solution

The fourth proportional to 315,084.08, 434,814.12 and 171,843.44 is: 237,142.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,084.08 : 434,814.12 = 171,843.44 : x
  2. Step 2: Convert to fraction form
    315,084.08/434,814.12 = 171,843.44/x
  3. Step 3: Cross multiply
    315,084.08x = 434,814.12 × 171,843.44
  4. Step 4: Simplify right side
    315,084.08x = 74,719,954,141.37
  5. Step 5: Solve for x
    x = 74,719,954,141.37/315,084.08
  6. Step 6: Final answer
    x = 237,142.91

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1.5x scale

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.