Home / 213,719.10-320,578.65-203,877.60

Finding the Fourth Proportional to 213,719.10, 320,578.65 and 203,877.60

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Solution

The fourth proportional to 213,719.10, 320,578.65 and 203,877.60 is: 305,816.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,719.10 : 320,578.65 = 203,877.60 : x
  2. Step 2: Convert to fraction form
    213,719.10/320,578.65 = 203,877.60/x
  3. Step 3: Cross multiply
    213,719.10x = 320,578.65 × 203,877.60
  4. Step 4: Simplify right side
    213,719.10x = 65,358,805,773.24
  5. Step 5: Solve for x
    x = 65,358,805,773.24/213,719.10
  6. Step 6: Final answer
    x = 305,816.40

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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.