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Finding the Fourth Proportional to 315,104.66, 434,844.17 and 171,864.26

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Solution

The fourth proportional to 315,104.66, 434,844.17 and 171,864.26 is: 237,172.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,104.66 : 434,844.17 = 171,864.26 : x
  2. Step 2: Convert to fraction form
    315,104.66/434,844.17 = 171,864.26/x
  3. Step 3: Cross multiply
    315,104.66x = 434,844.17 × 171,864.26
  4. Step 4: Simplify right side
    315,104.66x = 74,734,170,633.04
  5. Step 5: Solve for x
    x = 74,734,170,633.04/315,104.66
  6. Step 6: Final answer
    x = 237,172.53

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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.