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Finding the Fourth Proportional to 439,690.40, 659,049.60 and 173,362.40

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Solution

The fourth proportional to 439,690.40, 659,049.60 and 173,362.40 is: 259,851.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,690.40 : 659,049.60 = 173,362.40 : x
  2. Step 2: Convert to fraction form
    439,690.40/659,049.60 = 173,362.40/x
  3. Step 3: Cross multiply
    439,690.40x = 659,049.60 × 173,362.40
  4. Step 4: Simplify right side
    439,690.40x = 114,254,420,375.04
  5. Step 5: Solve for x
    x = 114,254,420,375.04/439,690.40
  6. Step 6: Final answer
    x = 259,851.98

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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.