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Finding the Fourth Proportional to 618,195.20, 926,601.60 and 263,148.80

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Solution

The fourth proportional to 618,195.20, 926,601.60 and 263,148.80 is: 394,428.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,195.20 : 926,601.60 = 263,148.80 : x
  2. Step 2: Convert to fraction form
    618,195.20/926,601.60 = 263,148.80/x
  3. Step 3: Cross multiply
    618,195.20x = 926,601.60 × 263,148.80
  4. Step 4: Simplify right side
    618,195.20x = 243,834,099,118.08
  5. Step 5: Solve for x
    x = 243,834,099,118.08/618,195.20
  6. Step 6: Final answer
    x = 394,428.98

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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.