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Finding the Fourth Proportional to 275,003.20, 412,504.80 and 212,795.20

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Solution

The fourth proportional to 275,003.20, 412,504.80 and 212,795.20 is: 319,192.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,003.20 : 412,504.80 = 212,795.20 : x
  2. Step 2: Convert to fraction form
    275,003.20/412,504.80 = 212,795.20/x
  3. Step 3: Cross multiply
    275,003.20x = 412,504.80 × 212,795.20
  4. Step 4: Simplify right side
    275,003.20x = 87,779,041,416.96
  5. Step 5: Solve for x
    x = 87,779,041,416.96/275,003.20
  6. Step 6: Final answer
    x = 319,192.80

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1.5x scale

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.