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Finding the Fourth Proportional to 361,982.80, 542,439.60 and 262,352.80

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Solution

The fourth proportional to 361,982.80, 542,439.60 and 262,352.80 is: 393,141.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,982.80 : 542,439.60 = 262,352.80 : x
  2. Step 2: Convert to fraction form
    361,982.80/542,439.60 = 262,352.80/x
  3. Step 3: Cross multiply
    361,982.80x = 542,439.60 × 262,352.80
  4. Step 4: Simplify right side
    361,982.80x = 142,310,547,890.88
  5. Step 5: Solve for x
    x = 142,310,547,890.88/361,982.80
  6. Step 6: Final answer
    x = 393,141.74

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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.