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Finding the Fourth Proportional to 315,055.26, 434,771.90 and 171,815.27

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Solution

The fourth proportional to 315,055.26, 434,771.90 and 171,815.27 is: 237,102.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,055.26 : 434,771.90 = 171,815.27 : x
  2. Step 2: Convert to fraction form
    315,055.26/434,771.90 = 171,815.27/x
  3. Step 3: Cross multiply
    315,055.26x = 434,771.90 × 171,815.27
  4. Step 4: Simplify right side
    315,055.26x = 74,700,448,353.98
  5. Step 5: Solve for x
    x = 74,700,448,353.98/315,055.26
  6. Step 6: Final answer
    x = 237,102.69

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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.