Home / 280,298.20-420,197.33-102,763.84

Finding the Fourth Proportional to 280,298.20, 420,197.33 and 102,763.84

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Solution

The fourth proportional to 280,298.20, 420,197.33 and 102,763.84 is: 154,054.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,298.20 : 420,197.33 = 102,763.84 : x
  2. Step 2: Convert to fraction form
    280,298.20/420,197.33 = 102,763.84/x
  3. Step 3: Cross multiply
    280,298.20x = 420,197.33 × 102,763.84
  4. Step 4: Simplify right side
    280,298.20x = 43,181,090,674.73
  5. Step 5: Solve for x
    x = 43,181,090,674.73/280,298.20
  6. Step 6: Final answer
    x = 154,054.11

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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.