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Finding the Fourth Proportional to 423,366.09, 635,068.31 and 123,872.37

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Solution

The fourth proportional to 423,366.09, 635,068.31 and 123,872.37 is: 185,814.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,366.09 : 635,068.31 = 123,872.37 : x
  2. Step 2: Convert to fraction form
    423,366.09/635,068.31 = 123,872.37/x
  3. Step 3: Cross multiply
    423,366.09x = 635,068.31 × 123,872.37
  4. Step 4: Simplify right side
    423,366.09x = 78,667,416,052.23
  5. Step 5: Solve for x
    x = 78,667,416,052.23/423,366.09
  6. Step 6: Final answer
    x = 185,814.16

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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.