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Finding the Fourth Proportional to 290,335.80, 435,633.30 and 103,481.40

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Solution

The fourth proportional to 290,335.80, 435,633.30 and 103,481.40 is: 155,268.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,335.80 : 435,633.30 = 103,481.40 : x
  2. Step 2: Convert to fraction form
    290,335.80/435,633.30 = 103,481.40/x
  3. Step 3: Cross multiply
    290,335.80x = 435,633.30 × 103,481.40
  4. Step 4: Simplify right side
    290,335.80x = 45,079,943,770.62
  5. Step 5: Solve for x
    x = 45,079,943,770.62/290,335.80
  6. Step 6: Final answer
    x = 155,268.29

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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.