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Finding the Fourth Proportional to 315,069.48, 434,806.44 and 171,837.36

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Solution

The fourth proportional to 315,069.48, 434,806.44 and 171,837.36 is: 237,141.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,069.48 : 434,806.44 = 171,837.36 : x
  2. Step 2: Convert to fraction form
    315,069.48/434,806.44 = 171,837.36/x
  3. Step 3: Cross multiply
    315,069.48x = 434,806.44 × 171,837.36
  4. Step 4: Simplify right side
    315,069.48x = 74,715,990,760.60
  5. Step 5: Solve for x
    x = 74,715,990,760.60/315,069.48
  6. Step 6: Final answer
    x = 237,141.31

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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.