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Finding the Fourth Proportional to 280,511.75, 420,789.63 and 93,523.25

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Solution

The fourth proportional to 280,511.75, 420,789.63 and 93,523.25 is: 140,292.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,511.75 : 420,789.63 = 93,523.25 : x
  2. Step 2: Convert to fraction form
    280,511.75/420,789.63 = 93,523.25/x
  3. Step 3: Cross multiply
    280,511.75x = 420,789.63 × 93,523.25
  4. Step 4: Simplify right side
    280,511.75x = 39,353,613,763.90
  5. Step 5: Solve for x
    x = 39,353,613,763.90/280,511.75
  6. Step 6: Final answer
    x = 140,292.21

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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.