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Finding the Fourth Proportional to 505,408.69, 757,859.50 and 168,330.83

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Solution

The fourth proportional to 505,408.69, 757,859.50 and 168,330.83 is: 252,411.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,408.69 : 757,859.50 = 168,330.83 : x
  2. Step 2: Convert to fraction form
    505,408.69/757,859.50 = 168,330.83/x
  3. Step 3: Cross multiply
    505,408.69x = 757,859.50 × 168,330.83
  4. Step 4: Simplify right side
    505,408.69x = 127,571,117,816.73
  5. Step 5: Solve for x
    x = 127,571,117,816.73/505,408.69
  6. Step 6: Final answer
    x = 252,411.80

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1.5x scale

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.