Home / 385,182,015.99-531,552,201.42-208,970,005.87

Finding the Fourth Proportional to 385,182,015.99, 531,552,201.42 and 208,970,005.87

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Solution

The fourth proportional to 385,182,015.99, 531,552,201.42 and 208,970,005.87 is: 288,379,161.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,182,015.99 : 531,552,201.42 = 208,970,005.87 : x
  2. Step 2: Convert to fraction form
    385,182,015.99/531,552,201.42 = 208,970,005.87/x
  3. Step 3: Cross multiply
    385,182,015.99x = 531,552,201.42 × 208,970,005.87
  4. Step 4: Simplify right side
    385,182,015.99x = 111,078,466,650,948,832
  5. Step 5: Solve for x
    x = 111,078,466,650,948,832/385,182,015.99
  6. Step 6: Final answer
    x = 288,379,161.12

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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.