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Finding the Fourth Proportional to 366,896.80, 550,025.20 and 142,410.40

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Solution

The fourth proportional to 366,896.80, 550,025.20 and 142,410.40 is: 213,491.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,896.80 : 550,025.20 = 142,410.40 : x
  2. Step 2: Convert to fraction form
    366,896.80/550,025.20 = 142,410.40/x
  3. Step 3: Cross multiply
    366,896.80x = 550,025.20 × 142,410.40
  4. Step 4: Simplify right side
    366,896.80x = 78,329,308,742.08
  5. Step 5: Solve for x
    x = 78,329,308,742.08/366,896.80
  6. Step 6: Final answer
    x = 213,491.39

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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.