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Finding the Fourth Proportional to 202,279.40, 303,419.10 and 131,420.60

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Solution

The fourth proportional to 202,279.40, 303,419.10 and 131,420.60 is: 197,130.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,279.40 : 303,419.10 = 131,420.60 : x
  2. Step 2: Convert to fraction form
    202,279.40/303,419.10 = 131,420.60/x
  3. Step 3: Cross multiply
    202,279.40x = 303,419.10 × 131,420.60
  4. Step 4: Simplify right side
    202,279.40x = 39,875,520,173.46
  5. Step 5: Solve for x
    x = 39,875,520,173.46/202,279.40
  6. Step 6: Final answer
    x = 197,130.90

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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.