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Finding the Fourth Proportional to 366,978.70, 550,468.05 and 100,738.80

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Solution

The fourth proportional to 366,978.70, 550,468.05 and 100,738.80 is: 151,108.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,978.70 : 550,468.05 = 100,738.80 : x
  2. Step 2: Convert to fraction form
    366,978.70/550,468.05 = 100,738.80/x
  3. Step 3: Cross multiply
    366,978.70x = 550,468.05 × 100,738.80
  4. Step 4: Simplify right side
    366,978.70x = 55,453,490,795.34
  5. Step 5: Solve for x
    x = 55,453,490,795.34/366,978.70
  6. Step 6: Final answer
    x = 151,108.20

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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.