Home / 260,768.16-391,236.48-120,618.72

Finding the Fourth Proportional to 260,768.16, 391,236.48 and 120,618.72

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Solution

The fourth proportional to 260,768.16, 391,236.48 and 120,618.72 is: 180,967.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,768.16 : 391,236.48 = 120,618.72 : x
  2. Step 2: Convert to fraction form
    260,768.16/391,236.48 = 120,618.72/x
  3. Step 3: Cross multiply
    260,768.16x = 391,236.48 × 120,618.72
  4. Step 4: Simplify right side
    260,768.16x = 47,190,443,434.91
  5. Step 5: Solve for x
    x = 47,190,443,434.91/260,768.16
  6. Step 6: Final answer
    x = 180,967.05

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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.