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Finding the Fourth Proportional to 275,379.50, 380,003.78 and 152,878.45

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Solution

The fourth proportional to 275,379.50, 380,003.78 and 152,878.45 is: 210,961.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,379.50 : 380,003.78 = 152,878.45 : x
  2. Step 2: Convert to fraction form
    275,379.50/380,003.78 = 152,878.45/x
  3. Step 3: Cross multiply
    275,379.50x = 380,003.78 × 152,878.45
  4. Step 4: Simplify right side
    275,379.50x = 58,094,388,591.15
  5. Step 5: Solve for x
    x = 58,094,388,591.15/275,379.50
  6. Step 6: Final answer
    x = 210,961.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.