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Finding the Fourth Proportional to 439,343.72, 659,015.64 and 106,919.72

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Solution

The fourth proportional to 439,343.72, 659,015.64 and 106,919.72 is: 160,379.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,343.72 : 659,015.64 = 106,919.72 : x
  2. Step 2: Convert to fraction form
    439,343.72/659,015.64 = 106,919.72/x
  3. Step 3: Cross multiply
    439,343.72x = 659,015.64 × 106,919.72
  4. Step 4: Simplify right side
    439,343.72x = 70,461,767,704.42
  5. Step 5: Solve for x
    x = 70,461,767,704.42/439,343.72
  6. Step 6: Final answer
    x = 160,379.59

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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.