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Finding the Fourth Proportional to 280,892.72, 421,142.24 and 103,376.67

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Solution

The fourth proportional to 280,892.72, 421,142.24 and 103,376.67 is: 154,992.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,892.72 : 421,142.24 = 103,376.67 : x
  2. Step 2: Convert to fraction form
    280,892.72/421,142.24 = 103,376.67/x
  3. Step 3: Cross multiply
    280,892.72x = 421,142.24 × 103,376.67
  4. Step 4: Simplify right side
    280,892.72x = 43,536,281,850.66
  5. Step 5: Solve for x
    x = 43,536,281,850.66/280,892.72
  6. Step 6: Final answer
    x = 154,992.56

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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.