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Finding the Fourth Proportional to 290,093.36, 435,130.92 and 79,729.48

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Solution

The fourth proportional to 290,093.36, 435,130.92 and 79,729.48 is: 119,591.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,093.36 : 435,130.92 = 79,729.48 : x
  2. Step 2: Convert to fraction form
    290,093.36/435,130.92 = 79,729.48/x
  3. Step 3: Cross multiply
    290,093.36x = 435,130.92 × 79,729.48
  4. Step 4: Simplify right side
    290,093.36x = 34,692,761,983.52
  5. Step 5: Solve for x
    x = 34,692,761,983.52/290,093.36
  6. Step 6: Final answer
    x = 119,591.71

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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.