Home / 289,171,721.62-399,056,975.83-165,412,398.74

Finding the Fourth Proportional to 289,171,721.62, 399,056,975.83 and 165,412,398.74

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Solution

The fourth proportional to 289,171,721.62, 399,056,975.83 and 165,412,398.74 is: 228,269,110.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,171,721.62 : 399,056,975.83 = 165,412,398.74 : x
  2. Step 2: Convert to fraction form
    289,171,721.62/399,056,975.83 = 165,412,398.74/x
  3. Step 3: Cross multiply
    289,171,721.62x = 399,056,975.83 × 165,412,398.74
  4. Step 4: Simplify right side
    289,171,721.62x = 66,008,971,605,970,504
  5. Step 5: Solve for x
    x = 66,008,971,605,970,504/289,171,721.62
  6. Step 6: Final answer
    x = 228,269,110.26

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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.