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Finding the Fourth Proportional to 290,438.44, 435,684.54 and 112,958.92

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Solution

The fourth proportional to 290,438.44, 435,684.54 and 112,958.92 is: 169,448.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,438.44 : 435,684.54 = 112,958.92 : x
  2. Step 2: Convert to fraction form
    290,438.44/435,684.54 = 112,958.92/x
  3. Step 3: Cross multiply
    290,438.44x = 435,684.54 × 112,958.92
  4. Step 4: Simplify right side
    290,438.44x = 49,214,455,099.10
  5. Step 5: Solve for x
    x = 49,214,455,099.10/290,438.44
  6. Step 6: Final answer
    x = 169,448.83

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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.