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Finding the Fourth Proportional to 355,538.20, 532,529.70 and 276,028.60

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Solution

The fourth proportional to 355,538.20, 532,529.70 and 276,028.60 is: 413,439.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,538.20 : 532,529.70 = 276,028.60 : x
  2. Step 2: Convert to fraction form
    355,538.20/532,529.70 = 276,028.60/x
  3. Step 3: Cross multiply
    355,538.20x = 532,529.70 × 276,028.60
  4. Step 4: Simplify right side
    355,538.20x = 146,993,427,549.42
  5. Step 5: Solve for x
    x = 146,993,427,549.42/355,538.20
  6. Step 6: Final answer
    x = 413,439.20

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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.