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Finding the Fourth Proportional to 300,545.96, 450,818.78 and 75,919.72

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Solution

The fourth proportional to 300,545.96, 450,818.78 and 75,919.72 is: 113,879.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,545.96 : 450,818.78 = 75,919.72 : x
  2. Step 2: Convert to fraction form
    300,545.96/450,818.78 = 75,919.72/x
  3. Step 3: Cross multiply
    300,545.96x = 450,818.78 × 75,919.72
  4. Step 4: Simplify right side
    300,545.96x = 34,226,035,548.34
  5. Step 5: Solve for x
    x = 34,226,035,548.34/300,545.96
  6. Step 6: Final answer
    x = 113,879.54

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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.