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Finding the Fourth Proportional to 219,126.33, 328,738.77 and 69,375.60

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Solution

The fourth proportional to 219,126.33, 328,738.77 and 69,375.60 is: 104,079.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,126.33 : 328,738.77 = 69,375.60 : x
  2. Step 2: Convert to fraction form
    219,126.33/328,738.77 = 69,375.60/x
  3. Step 3: Cross multiply
    219,126.33x = 328,738.77 × 69,375.60
  4. Step 4: Simplify right side
    219,126.33x = 22,806,449,412.01
  5. Step 5: Solve for x
    x = 22,806,449,412.01/219,126.33
  6. Step 6: Final answer
    x = 104,079.00

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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.