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Finding the Fourth Proportional to 280,367.56, 420,540.36 and 93,379.06

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Solution

The fourth proportional to 280,367.56, 420,540.36 and 93,379.06 is: 140,064.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,367.56 : 420,540.36 = 93,379.06 : x
  2. Step 2: Convert to fraction form
    280,367.56/420,540.36 = 93,379.06/x
  3. Step 3: Cross multiply
    280,367.56x = 420,540.36 × 93,379.06
  4. Step 4: Simplify right side
    280,367.56x = 39,269,663,508.86
  5. Step 5: Solve for x
    x = 39,269,663,508.86/280,367.56
  6. Step 6: Final answer
    x = 140,064.93

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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.