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Finding the Fourth Proportional to 276,670.40, 415,005.60 and 274,920.80

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Solution

The fourth proportional to 276,670.40, 415,005.60 and 274,920.80 is: 412,381.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,670.40 : 415,005.60 = 274,920.80 : x
  2. Step 2: Convert to fraction form
    276,670.40/415,005.60 = 274,920.80/x
  3. Step 3: Cross multiply
    276,670.40x = 415,005.60 × 274,920.80
  4. Step 4: Simplify right side
    276,670.40x = 114,093,671,556.48
  5. Step 5: Solve for x
    x = 114,093,671,556.48/276,670.40
  6. Step 6: Final answer
    x = 412,381.20

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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.