Home / 278,815.72-384,757.14-151,488.58

Finding the Fourth Proportional to 278,815.72, 384,757.14 and 151,488.58

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Solution

The fourth proportional to 278,815.72, 384,757.14 and 151,488.58 is: 209,049.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,815.72 : 384,757.14 = 151,488.58 : x
  2. Step 2: Convert to fraction form
    278,815.72/384,757.14 = 151,488.58/x
  3. Step 3: Cross multiply
    278,815.72x = 384,757.14 × 151,488.58
  4. Step 4: Simplify right side
    278,815.72x = 58,286,312,783.46
  5. Step 5: Solve for x
    x = 58,286,312,783.46/278,815.72
  6. Step 6: Final answer
    x = 209,049.59

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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.