Home / 260,861.22-390,650.31-127,310.85

Finding the Fourth Proportional to 260,861.22, 390,650.31 and 127,310.85

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Solution

The fourth proportional to 260,861.22, 390,650.31 and 127,310.85 is: 190,653.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,861.22 : 390,650.31 = 127,310.85 : x
  2. Step 2: Convert to fraction form
    260,861.22/390,650.31 = 127,310.85/x
  3. Step 3: Cross multiply
    260,861.22x = 390,650.31 × 127,310.85
  4. Step 4: Simplify right side
    260,861.22x = 49,734,023,018.86
  5. Step 5: Solve for x
    x = 49,734,023,018.86/260,861.22
  6. Step 6: Final answer
    x = 190,653.19

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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.