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Finding the Fourth Proportional to 202,119.20, 303,428.40 and 127,239.20

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Solution

The fourth proportional to 202,119.20, 303,428.40 and 127,239.20 is: 191,015.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,119.20 : 303,428.40 = 127,239.20 : x
  2. Step 2: Convert to fraction form
    202,119.20/303,428.40 = 127,239.20/x
  3. Step 3: Cross multiply
    202,119.20x = 303,428.40 × 127,239.20
  4. Step 4: Simplify right side
    202,119.20x = 38,607,986,873.28
  5. Step 5: Solve for x
    x = 38,607,986,873.28/202,119.20
  6. Step 6: Final answer
    x = 191,015.93

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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.