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Finding the Fourth Proportional to 325,290.80, 488,045.19 and 112,205.80

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Solution

The fourth proportional to 325,290.80, 488,045.19 and 112,205.80 is: 168,346.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,290.80 : 488,045.19 = 112,205.80 : x
  2. Step 2: Convert to fraction form
    325,290.80/488,045.19 = 112,205.80/x
  3. Step 3: Cross multiply
    325,290.80x = 488,045.19 × 112,205.80
  4. Step 4: Simplify right side
    325,290.80x = 54,761,500,650.56
  5. Step 5: Solve for x
    x = 54,761,500,650.56/325,290.80
  6. Step 6: Final answer
    x = 168,346.29

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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.