Home / 279,043.87-418,556.42-121,272.34

Finding the Fourth Proportional to 279,043.87, 418,556.42 and 121,272.34

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Solution

The fourth proportional to 279,043.87, 418,556.42 and 121,272.34 is: 181,904.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,043.87 : 418,556.42 = 121,272.34 : x
  2. Step 2: Convert to fraction form
    279,043.87/418,556.42 = 121,272.34/x
  3. Step 3: Cross multiply
    279,043.87x = 418,556.42 × 121,272.34
  4. Step 4: Simplify right side
    279,043.87x = 50,759,316,475.42
  5. Step 5: Solve for x
    x = 50,759,316,475.42/279,043.87
  6. Step 6: Final answer
    x = 181,904.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.