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Finding the Fourth Proportional to 423,853.76, 635,640.24 and 171,068.96

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Solution

The fourth proportional to 423,853.76, 635,640.24 and 171,068.96 is: 256,546.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,853.76 : 635,640.24 = 171,068.96 : x
  2. Step 2: Convert to fraction form
    423,853.76/635,640.24 = 171,068.96/x
  3. Step 3: Cross multiply
    423,853.76x = 635,640.24 × 171,068.96
  4. Step 4: Simplify right side
    423,853.76x = 108,738,314,790.95
  5. Step 5: Solve for x
    x = 108,738,314,790.95/423,853.76
  6. Step 6: Final answer
    x = 256,546.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.