Home / 278,644.14-384,646.64-188,122.73

Finding the Fourth Proportional to 278,644.14, 384,646.64 and 188,122.73

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Solution

The fourth proportional to 278,644.14, 384,646.64 and 188,122.73 is: 259,688.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,644.14 : 384,646.64 = 188,122.73 : x
  2. Step 2: Convert to fraction form
    278,644.14/384,646.64 = 188,122.73/x
  3. Step 3: Cross multiply
    278,644.14x = 384,646.64 × 188,122.73
  4. Step 4: Simplify right side
    278,644.14x = 72,360,773,138.28
  5. Step 5: Solve for x
    x = 72,360,773,138.28/278,644.14
  6. Step 6: Final answer
    x = 259,688.84

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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.