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Finding the Fourth Proportional to 439,535.08, 659,840.96 and 289,900.56

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Solution

The fourth proportional to 439,535.08, 659,840.96 and 289,900.56 is: 435,205.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,535.08 : 659,840.96 = 289,900.56 : x
  2. Step 2: Convert to fraction form
    439,535.08/659,840.96 = 289,900.56/x
  3. Step 3: Cross multiply
    439,535.08x = 659,840.96 × 289,900.56
  4. Step 4: Simplify right side
    439,535.08x = 191,288,263,814.94
  5. Step 5: Solve for x
    x = 191,288,263,814.94/439,535.08
  6. Step 6: Final answer
    x = 435,205.91

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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.