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Finding the Fourth Proportional to 273,007.70, 409,511.55 and 257,455.70

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Solution

The fourth proportional to 273,007.70, 409,511.55 and 257,455.70 is: 386,183.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,007.70 : 409,511.55 = 257,455.70 : x
  2. Step 2: Convert to fraction form
    273,007.70/409,511.55 = 257,455.70/x
  3. Step 3: Cross multiply
    273,007.70x = 409,511.55 × 257,455.70
  4. Step 4: Simplify right side
    273,007.70x = 105,431,082,763.34
  5. Step 5: Solve for x
    x = 105,431,082,763.34/273,007.70
  6. Step 6: Final answer
    x = 386,183.55

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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.