Home / 398,884.08-598,585.32-212,026.80

Finding the Fourth Proportional to 398,884.08, 598,585.32 and 212,026.80

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Solution

The fourth proportional to 398,884.08, 598,585.32 and 212,026.80 is: 318,177.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,884.08 : 598,585.32 = 212,026.80 : x
  2. Step 2: Convert to fraction form
    398,884.08/598,585.32 = 212,026.80/x
  3. Step 3: Cross multiply
    398,884.08x = 598,585.32 × 212,026.80
  4. Step 4: Simplify right side
    398,884.08x = 126,916,129,926.58
  5. Step 5: Solve for x
    x = 126,916,129,926.58/398,884.08
  6. Step 6: Final answer
    x = 318,177.98

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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.