Home / 213,619.10-320,428.65-204,518.30

Finding the Fourth Proportional to 213,619.10, 320,428.65 and 204,518.30

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Solution

The fourth proportional to 213,619.10, 320,428.65 and 204,518.30 is: 306,777.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,619.10 : 320,428.65 = 204,518.30 : x
  2. Step 2: Convert to fraction form
    213,619.10/320,428.65 = 204,518.30/x
  3. Step 3: Cross multiply
    213,619.10x = 320,428.65 × 204,518.30
  4. Step 4: Simplify right side
    213,619.10x = 65,533,522,769.30
  5. Step 5: Solve for x
    x = 65,533,522,769.30/213,619.10
  6. Step 6: Final answer
    x = 306,777.45

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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.