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Finding the Fourth Proportional to 276,675.20, 415,401.60 and 171,699.20

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Solution

The fourth proportional to 276,675.20, 415,401.60 and 171,699.20 is: 257,790.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,675.20 : 415,401.60 = 171,699.20 : x
  2. Step 2: Convert to fraction form
    276,675.20/415,401.60 = 171,699.20/x
  3. Step 3: Cross multiply
    276,675.20x = 415,401.60 × 171,699.20
  4. Step 4: Simplify right side
    276,675.20x = 71,324,122,398.72
  5. Step 5: Solve for x
    x = 71,324,122,398.72/276,675.20
  6. Step 6: Final answer
    x = 257,790.08

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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.