Home / 272,790.20-408,922.82-139,733.12

Finding the Fourth Proportional to 272,790.20, 408,922.82 and 139,733.12

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Solution

The fourth proportional to 272,790.20, 408,922.82 and 139,733.12 is: 209,465.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,790.20 : 408,922.82 = 139,733.12 : x
  2. Step 2: Convert to fraction form
    272,790.20/408,922.82 = 139,733.12/x
  3. Step 3: Cross multiply
    272,790.20x = 408,922.82 × 139,733.12
  4. Step 4: Simplify right side
    272,790.20x = 57,140,061,477.80
  5. Step 5: Solve for x
    x = 57,140,061,477.80/272,790.20
  6. Step 6: Final answer
    x = 209,465.23

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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.