Home / 218,342,640.56-327,671,991.63-85,415,103.86

Finding the Fourth Proportional to 218,342,640.56, 327,671,991.63 and 85,415,103.86

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Solution

The fourth proportional to 218,342,640.56, 327,671,991.63 and 85,415,103.86 is: 128,184,477.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,342,640.56 : 327,671,991.63 = 85,415,103.86 : x
  2. Step 2: Convert to fraction form
    218,342,640.56/327,671,991.63 = 85,415,103.86/x
  3. Step 3: Cross multiply
    218,342,640.56x = 327,671,991.63 × 85,415,103.86
  4. Step 4: Simplify right side
    218,342,640.56x = 27,988,137,195,451,140
  5. Step 5: Solve for x
    x = 27,988,137,195,451,140/218,342,640.56
  6. Step 6: Final answer
    x = 128,184,477.04

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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.