Home / 305,444,853.99-421,724,782.17-285,930,340.47

Finding the Fourth Proportional to 305,444,853.99, 421,724,782.17 and 285,930,340.47

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Solution

The fourth proportional to 305,444,853.99, 421,724,782.17 and 285,930,340.47 is: 394,781,280.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,444,853.99 : 421,724,782.17 = 285,930,340.47 : x
  2. Step 2: Convert to fraction form
    305,444,853.99/421,724,782.17 = 285,930,340.47/x
  3. Step 3: Cross multiply
    305,444,853.99x = 421,724,782.17 × 285,930,340.47
  4. Step 4: Simplify right side
    305,444,853.99x = 120,583,910,550,504,704
  5. Step 5: Solve for x
    x = 120,583,910,550,504,704/305,444,853.99
  6. Step 6: Final answer
    x = 394,781,280.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.