Home / 398,741.43-598,110.78-99,221.96

Finding the Fourth Proportional to 398,741.43, 598,110.78 and 99,221.96

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Solution

The fourth proportional to 398,741.43, 598,110.78 and 99,221.96 is: 148,832.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,741.43 : 598,110.78 = 99,221.96 : x
  2. Step 2: Convert to fraction form
    398,741.43/598,110.78 = 99,221.96/x
  3. Step 3: Cross multiply
    398,741.43x = 598,110.78 × 99,221.96
  4. Step 4: Simplify right side
    398,741.43x = 59,345,725,756.09
  5. Step 5: Solve for x
    x = 59,345,725,756.09/398,741.43
  6. Step 6: Final answer
    x = 148,832.60

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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.