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Finding the Fourth Proportional to 545,027.70, 818,027.55 and 320,106.90

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Solution

The fourth proportional to 545,027.70, 818,027.55 and 320,106.90 is: 480,445.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,027.70 : 818,027.55 = 320,106.90 : x
  2. Step 2: Convert to fraction form
    545,027.70/818,027.55 = 320,106.90/x
  3. Step 3: Cross multiply
    545,027.70x = 818,027.55 × 320,106.90
  4. Step 4: Simplify right side
    545,027.70x = 261,856,263,145.10
  5. Step 5: Solve for x
    x = 261,856,263,145.10/545,027.70
  6. Step 6: Final answer
    x = 480,445.79

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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.