Home / 218,563,939.11-327,809,997.95-78,475,396.45

Finding the Fourth Proportional to 218,563,939.11, 327,809,997.95 and 78,475,396.45

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Solution

The fourth proportional to 218,563,939.11, 327,809,997.95 and 78,475,396.45 is: 117,700,200.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,563,939.11 : 327,809,997.95 = 78,475,396.45 : x
  2. Step 2: Convert to fraction form
    218,563,939.11/327,809,997.95 = 78,475,396.45/x
  3. Step 3: Cross multiply
    218,563,939.11x = 327,809,997.95 × 78,475,396.45
  4. Step 4: Simplify right side
    218,563,939.11x = 25,725,019,549,399,936
  5. Step 5: Solve for x
    x = 25,725,019,549,399,936/218,563,939.11
  6. Step 6: Final answer
    x = 117,700,200.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.