Home / 387,675,485.85-534,993,833.82-211,467,321.21

Finding the Fourth Proportional to 387,675,485.85, 534,993,833.82 and 211,467,321.21

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Solution

The fourth proportional to 387,675,485.85, 534,993,833.82 and 211,467,321.21 is: 291,825,810.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,675,485.85 : 534,993,833.82 = 211,467,321.21 : x
  2. Step 2: Convert to fraction form
    387,675,485.85/534,993,833.82 = 211,467,321.21/x
  3. Step 3: Cross multiply
    387,675,485.85x = 534,993,833.82 × 211,467,321.21
  4. Step 4: Simplify right side
    387,675,485.85x = 113,133,712,901,783,312
  5. Step 5: Solve for x
    x = 113,133,712,901,783,312/387,675,485.85
  6. Step 6: Final answer
    x = 291,825,810.58

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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.