Home / 281,109.10-421,858.05-202,279.90

Finding the Fourth Proportional to 281,109.10, 421,858.05 and 202,279.90

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Solution

The fourth proportional to 281,109.10, 421,858.05 and 202,279.90 is: 303,559.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,109.10 : 421,858.05 = 202,279.90 : x
  2. Step 2: Convert to fraction form
    281,109.10/421,858.05 = 202,279.90/x
  3. Step 3: Cross multiply
    281,109.10x = 421,858.05 × 202,279.90
  4. Step 4: Simplify right side
    281,109.10x = 85,333,404,168.20
  5. Step 5: Solve for x
    x = 85,333,404,168.20/281,109.10
  6. Step 6: Final answer
    x = 303,559.74

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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.