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Finding the Fourth Proportional to 315,232.25, 435,021.93 and 171,995.31

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Solution

The fourth proportional to 315,232.25, 435,021.93 and 171,995.31 is: 237,354.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,232.25 : 435,021.93 = 171,995.31 : x
  2. Step 2: Convert to fraction form
    315,232.25/435,021.93 = 171,995.31/x
  3. Step 3: Cross multiply
    315,232.25x = 435,021.93 × 171,995.31
  4. Step 4: Simplify right side
    315,232.25x = 74,821,731,707.15
  5. Step 5: Solve for x
    x = 74,821,731,707.15/315,232.25
  6. Step 6: Final answer
    x = 237,354.31

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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.