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Finding the Fourth Proportional to 366,902.10, 550,353.15 and 278,328.60

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Solution

The fourth proportional to 366,902.10, 550,353.15 and 278,328.60 is: 417,492.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,902.10 : 550,353.15 = 278,328.60 : x
  2. Step 2: Convert to fraction form
    366,902.10/550,353.15 = 278,328.60/x
  3. Step 3: Cross multiply
    366,902.10x = 550,353.15 × 278,328.60
  4. Step 4: Simplify right side
    366,902.10x = 153,179,021,745.09
  5. Step 5: Solve for x
    x = 153,179,021,745.09/366,902.10
  6. Step 6: Final answer
    x = 417,492.90

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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.