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Finding the Fourth Proportional to 290,744.61, 436,032.68 and 113,212.05

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Solution

The fourth proportional to 290,744.61, 436,032.68 and 113,212.05 is: 169,785.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,744.61 : 436,032.68 = 113,212.05 : x
  2. Step 2: Convert to fraction form
    290,744.61/436,032.68 = 113,212.05/x
  3. Step 3: Cross multiply
    290,744.61x = 436,032.68 × 113,212.05
  4. Step 4: Simplify right side
    290,744.61x = 49,364,153,003.73
  5. Step 5: Solve for x
    x = 49,364,153,003.73/290,744.61
  6. Step 6: Final answer
    x = 169,785.27

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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.