Home / 279,061.40-418,582.62-121,289.84

Finding the Fourth Proportional to 279,061.40, 418,582.62 and 121,289.84

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Solution

The fourth proportional to 279,061.40, 418,582.62 and 121,289.84 is: 181,930.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,061.40 : 418,582.62 = 121,289.84 : x
  2. Step 2: Convert to fraction form
    279,061.40/418,582.62 = 121,289.84/x
  3. Step 3: Cross multiply
    279,061.40x = 418,582.62 × 121,289.84
  4. Step 4: Simplify right side
    279,061.40x = 50,769,819,006.58
  5. Step 5: Solve for x
    x = 50,769,819,006.58/279,061.40
  6. Step 6: Final answer
    x = 181,930.64

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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.