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Finding the Fourth Proportional to 275,485.80, 412,353.90 and 254,490.60

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Solution

The fourth proportional to 275,485.80, 412,353.90 and 254,490.60 is: 380,927.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,485.80 : 412,353.90 = 254,490.60 : x
  2. Step 2: Convert to fraction form
    275,485.80/412,353.90 = 254,490.60/x
  3. Step 3: Cross multiply
    275,485.80x = 412,353.90 × 254,490.60
  4. Step 4: Simplify right side
    275,485.80x = 104,940,191,423.34
  5. Step 5: Solve for x
    x = 104,940,191,423.34/275,485.80
  6. Step 6: Final answer
    x = 380,927.77

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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.