Home / 278,836.18-384,796.28-151,511.76

Finding the Fourth Proportional to 278,836.18, 384,796.28 and 151,511.76

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Solution

The fourth proportional to 278,836.18, 384,796.28 and 151,511.76 is: 209,087.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,836.18 : 384,796.28 = 151,511.76 : x
  2. Step 2: Convert to fraction form
    278,836.18/384,796.28 = 151,511.76/x
  3. Step 3: Cross multiply
    278,836.18x = 384,796.28 × 151,511.76
  4. Step 4: Simplify right side
    278,836.18x = 58,301,162,003.03
  5. Step 5: Solve for x
    x = 58,301,162,003.03/278,836.18
  6. Step 6: Final answer
    x = 209,087.51

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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.