Home / 305,444,843.34-421,724,767.47-285,930,329.82

Finding the Fourth Proportional to 305,444,843.34, 421,724,767.47 and 285,930,329.82

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Solution

The fourth proportional to 305,444,843.34, 421,724,767.47 and 285,930,329.82 is: 394,781,265.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,444,843.34 : 421,724,767.47 = 285,930,329.82 : x
  2. Step 2: Convert to fraction form
    305,444,843.34/421,724,767.47 = 285,930,329.82/x
  3. Step 3: Cross multiply
    305,444,843.34x = 421,724,767.47 × 285,930,329.82
  4. Step 4: Simplify right side
    305,444,843.34x = 120,583,901,855,959,920
  5. Step 5: Solve for x
    x = 120,583,901,855,959,920/305,444,843.34
  6. Step 6: Final answer
    x = 394,781,265.70

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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.