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Finding the Fourth Proportional to 279,482.28, 419,164.62 and 89,959.58

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Solution

The fourth proportional to 279,482.28, 419,164.62 and 89,959.58 is: 134,920.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,482.28 : 419,164.62 = 89,959.58 : x
  2. Step 2: Convert to fraction form
    279,482.28/419,164.62 = 89,959.58/x
  3. Step 3: Cross multiply
    279,482.28x = 419,164.62 × 89,959.58
  4. Step 4: Simplify right side
    279,482.28x = 37,707,873,166.06
  5. Step 5: Solve for x
    x = 37,707,873,166.06/279,482.28
  6. Step 6: Final answer
    x = 134,920.44

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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.