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Finding the Fourth Proportional to 290,658.60, 435,809.48 and 112,958.12

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Solution

The fourth proportional to 290,658.60, 435,809.48 and 112,958.12 is: 169,367.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,658.60 : 435,809.48 = 112,958.12 : x
  2. Step 2: Convert to fraction form
    290,658.60/435,809.48 = 112,958.12/x
  3. Step 3: Cross multiply
    290,658.60x = 435,809.48 × 112,958.12
  4. Step 4: Simplify right side
    290,658.60x = 49,228,219,538.98
  5. Step 5: Solve for x
    x = 49,228,219,538.98/290,658.60
  6. Step 6: Final answer
    x = 169,367.84

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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.