Home / 279,100.60-418,521.30-121,247.80

Finding the Fourth Proportional to 279,100.60, 418,521.30 and 121,247.80

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Solution

The fourth proportional to 279,100.60, 418,521.30 and 121,247.80 is: 181,815.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,100.60 : 418,521.30 = 121,247.80 : x
  2. Step 2: Convert to fraction form
    279,100.60/418,521.30 = 121,247.80/x
  3. Step 3: Cross multiply
    279,100.60x = 418,521.30 × 121,247.80
  4. Step 4: Simplify right side
    279,100.60x = 50,744,786,878.14
  5. Step 5: Solve for x
    x = 50,744,786,878.14/279,100.60
  6. Step 6: Final answer
    x = 181,815.40

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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.