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Finding the Fourth Proportional to 315,093.06, 434,828.39 and 171,853.11

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Solution

The fourth proportional to 315,093.06, 434,828.39 and 171,853.11 is: 237,157.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,093.06 : 434,828.39 = 171,853.11 : x
  2. Step 2: Convert to fraction form
    315,093.06/434,828.39 = 171,853.11/x
  3. Step 3: Cross multiply
    315,093.06x = 434,828.39 × 171,853.11
  4. Step 4: Simplify right side
    315,093.06x = 74,726,610,278.53
  5. Step 5: Solve for x
    x = 74,726,610,278.53/315,093.06
  6. Step 6: Final answer
    x = 237,157.27

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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.