Home / 321,636.12-443,910.99-178,442.30

Finding the Fourth Proportional to 321,636.12, 443,910.99 and 178,442.30

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Solution

The fourth proportional to 321,636.12, 443,910.99 and 178,442.30 is: 246,279.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,636.12 : 443,910.99 = 178,442.30 : x
  2. Step 2: Convert to fraction form
    321,636.12/443,910.99 = 178,442.30/x
  3. Step 3: Cross multiply
    321,636.12x = 443,910.99 × 178,442.30
  4. Step 4: Simplify right side
    321,636.12x = 79,212,495,831.32
  5. Step 5: Solve for x
    x = 79,212,495,831.32/321,636.12
  6. Step 6: Final answer
    x = 246,279.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.