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Finding the Fourth Proportional to 278,846.92, 384,798.44 and 151,519.76

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Solution

The fourth proportional to 278,846.92, 384,798.44 and 151,519.76 is: 209,091.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,846.92 : 384,798.44 = 151,519.76 : x
  2. Step 2: Convert to fraction form
    278,846.92/384,798.44 = 151,519.76/x
  3. Step 3: Cross multiply
    278,846.92x = 384,798.44 × 151,519.76
  4. Step 4: Simplify right side
    278,846.92x = 58,304,567,277.17
  5. Step 5: Solve for x
    x = 58,304,567,277.17/278,846.92
  6. Step 6: Final answer
    x = 209,091.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.