Home / 280,262.18-420,340.89-75,099.25

Finding the Fourth Proportional to 280,262.18, 420,340.89 and 75,099.25

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Solution

The fourth proportional to 280,262.18, 420,340.89 and 75,099.25 is: 112,634.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,262.18 : 420,340.89 = 75,099.25 : x
  2. Step 2: Convert to fraction form
    280,262.18/420,340.89 = 75,099.25/x
  3. Step 3: Cross multiply
    280,262.18x = 420,340.89 × 75,099.25
  4. Step 4: Simplify right side
    280,262.18x = 31,567,285,207.84
  5. Step 5: Solve for x
    x = 31,567,285,207.84/280,262.18
  6. Step 6: Final answer
    x = 112,634.84

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1.5x scale

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.