Home / 278,836.28-384,796.50-151,511.87

Finding the Fourth Proportional to 278,836.28, 384,796.50 and 151,511.87

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Solution

The fourth proportional to 278,836.28, 384,796.50 and 151,511.87 is: 209,087.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,836.28 : 384,796.50 = 151,511.87 : x
  2. Step 2: Convert to fraction form
    278,836.28/384,796.50 = 151,511.87/x
  3. Step 3: Cross multiply
    278,836.28x = 384,796.50 × 151,511.87
  4. Step 4: Simplify right side
    278,836.28x = 58,301,239,252.02
  5. Step 5: Solve for x
    x = 58,301,239,252.02/278,836.28
  6. Step 6: Final answer
    x = 209,087.71

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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.