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Finding the Fourth Proportional to 290,249.76, 434,859.05 and 247,698.03

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Solution

The fourth proportional to 290,249.76, 434,859.05 and 247,698.03 is: 371,107.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,249.76 : 434,859.05 = 247,698.03 : x
  2. Step 2: Convert to fraction form
    290,249.76/434,859.05 = 247,698.03/x
  3. Step 3: Cross multiply
    290,249.76x = 434,859.05 × 247,698.03
  4. Step 4: Simplify right side
    290,249.76x = 107,713,726,599.89
  5. Step 5: Solve for x
    x = 107,713,726,599.89/290,249.76
  6. Step 6: Final answer
    x = 371,107.04

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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.