Home / 280,336.42-420,575.64-80,652.52

Finding the Fourth Proportional to 280,336.42, 420,575.64 and 80,652.52

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Solution

The fourth proportional to 280,336.42, 420,575.64 and 80,652.52 is: 120,999.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,336.42 : 420,575.64 = 80,652.52 : x
  2. Step 2: Convert to fraction form
    280,336.42/420,575.64 = 80,652.52/x
  3. Step 3: Cross multiply
    280,336.42x = 420,575.64 × 80,652.52
  4. Step 4: Simplify right side
    280,336.42x = 33,920,485,216.61
  5. Step 5: Solve for x
    x = 33,920,485,216.61/280,336.42
  6. Step 6: Final answer
    x = 120,999.21

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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.