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Finding the Fourth Proportional to 202,435.20, 303,902.40 and 127,555.20

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Solution

The fourth proportional to 202,435.20, 303,902.40 and 127,555.20 is: 191,490.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,435.20 : 303,902.40 = 127,555.20 : x
  2. Step 2: Convert to fraction form
    202,435.20/303,902.40 = 127,555.20/x
  3. Step 3: Cross multiply
    202,435.20x = 303,902.40 × 127,555.20
  4. Step 4: Simplify right side
    202,435.20x = 38,764,331,412.48
  5. Step 5: Solve for x
    x = 38,764,331,412.48/202,435.20
  6. Step 6: Final answer
    x = 191,490.07

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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.