Home / 279,257.55-418,727.64-190,618.35

Finding the Fourth Proportional to 279,257.55, 418,727.64 and 190,618.35

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Solution

The fourth proportional to 279,257.55, 418,727.64 and 190,618.35 is: 285,819.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,257.55 : 418,727.64 = 190,618.35 : x
  2. Step 2: Convert to fraction form
    279,257.55/418,727.64 = 190,618.35/x
  3. Step 3: Cross multiply
    279,257.55x = 418,727.64 × 190,618.35
  4. Step 4: Simplify right side
    279,257.55x = 79,817,171,836.19
  5. Step 5: Solve for x
    x = 79,817,171,836.19/279,257.55
  6. Step 6: Final answer
    x = 285,819.21

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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.