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Finding the Fourth Proportional to 276,807.60, 415,211.40 and 252,313.20

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Solution

The fourth proportional to 276,807.60, 415,211.40 and 252,313.20 is: 378,469.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,807.60 : 415,211.40 = 252,313.20 : x
  2. Step 2: Convert to fraction form
    276,807.60/415,211.40 = 252,313.20/x
  3. Step 3: Cross multiply
    276,807.60x = 415,211.40 × 252,313.20
  4. Step 4: Simplify right side
    276,807.60x = 104,763,317,010.48
  5. Step 5: Solve for x
    x = 104,763,317,010.48/276,807.60
  6. Step 6: Final answer
    x = 378,469.80

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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.