Home / 213,979.28-320,737.22-139,153.12

Finding the Fourth Proportional to 213,979.28, 320,737.22 and 139,153.12

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Solution

The fourth proportional to 213,979.28, 320,737.22 and 139,153.12 is: 208,579.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,979.28 : 320,737.22 = 139,153.12 : x
  2. Step 2: Convert to fraction form
    213,979.28/320,737.22 = 139,153.12/x
  3. Step 3: Cross multiply
    213,979.28x = 320,737.22 × 139,153.12
  4. Step 4: Simplify right side
    213,979.28x = 44,631,586,474.23
  5. Step 5: Solve for x
    x = 44,631,586,474.23/213,979.28
  6. Step 6: Final answer
    x = 208,579.02

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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.