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Finding the Fourth Proportional to 496,626.40, 745,247.40 and 260,138.80

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Solution

The fourth proportional to 496,626.40, 745,247.40 and 260,138.80 is: 390,369.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,626.40 : 745,247.40 = 260,138.80 : x
  2. Step 2: Convert to fraction form
    496,626.40/745,247.40 = 260,138.80/x
  3. Step 3: Cross multiply
    496,626.40x = 745,247.40 × 260,138.80
  4. Step 4: Simplify right side
    496,626.40x = 193,867,764,339.12
  5. Step 5: Solve for x
    x = 193,867,764,339.12/496,626.40
  6. Step 6: Final answer
    x = 390,369.43

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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.