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Finding the Fourth Proportional to 280,625.91, 421,104.93 and 103,257.47

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Solution

The fourth proportional to 280,625.91, 421,104.93 and 103,257.47 is: 154,947.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,625.91 : 421,104.93 = 103,257.47 : x
  2. Step 2: Convert to fraction form
    280,625.91/421,104.93 = 103,257.47/x
  3. Step 3: Cross multiply
    280,625.91x = 421,104.93 × 103,257.47
  4. Step 4: Simplify right side
    280,625.91x = 43,482,229,676.33
  5. Step 5: Solve for x
    x = 43,482,229,676.33/280,625.91
  6. Step 6: Final answer
    x = 154,947.31

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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.