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Finding the Fourth Proportional to 278,981.44, 418,464.42 and 101,491.72

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Solution

The fourth proportional to 278,981.44, 418,464.42 and 101,491.72 is: 152,234.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,981.44 : 418,464.42 = 101,491.72 : x
  2. Step 2: Convert to fraction form
    278,981.44/418,464.42 = 101,491.72/x
  3. Step 3: Cross multiply
    278,981.44x = 418,464.42 × 101,491.72
  4. Step 4: Simplify right side
    278,981.44x = 42,470,673,744.60
  5. Step 5: Solve for x
    x = 42,470,673,744.60/278,981.44
  6. Step 6: Final answer
    x = 152,234.76

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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.