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Finding the Fourth Proportional to 275,410.68, 412,783.86 and 142,218.34

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Solution

The fourth proportional to 275,410.68, 412,783.86 and 142,218.34 is: 213,155.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,410.68 : 412,783.86 = 142,218.34 : x
  2. Step 2: Convert to fraction form
    275,410.68/412,783.86 = 142,218.34/x
  3. Step 3: Cross multiply
    275,410.68x = 412,783.86 × 142,218.34
  4. Step 4: Simplify right side
    275,410.68x = 58,705,435,347.99
  5. Step 5: Solve for x
    x = 58,705,435,347.99/275,410.68
  6. Step 6: Final answer
    x = 213,155.99

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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.