Home / 259,742.40-389,613.60-111,998.40

Finding the Fourth Proportional to 259,742.40, 389,613.60 and 111,998.40

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Solution

The fourth proportional to 259,742.40, 389,613.60 and 111,998.40 is: 167,997.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,742.40 : 389,613.60 = 111,998.40 : x
  2. Step 2: Convert to fraction form
    259,742.40/389,613.60 = 111,998.40/x
  3. Step 3: Cross multiply
    259,742.40x = 389,613.60 × 111,998.40
  4. Step 4: Simplify right side
    259,742.40x = 43,636,099,818.24
  5. Step 5: Solve for x
    x = 43,636,099,818.24/259,742.40
  6. Step 6: Final answer
    x = 167,997.60

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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.