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Finding the Fourth Proportional to 603,138.90, 904,380.30 and 248,188.80

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Solution

The fourth proportional to 603,138.90, 904,380.30 and 248,188.80 is: 372,148.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,138.90 : 904,380.30 = 248,188.80 : x
  2. Step 2: Convert to fraction form
    603,138.90/904,380.30 = 248,188.80/x
  3. Step 3: Cross multiply
    603,138.90x = 904,380.30 × 248,188.80
  4. Step 4: Simplify right side
    603,138.90x = 224,457,061,400.64
  5. Step 5: Solve for x
    x = 224,457,061,400.64/603,138.90
  6. Step 6: Final answer
    x = 372,148.21

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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.