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Finding the Fourth Proportional to 202,879.20, 304,568.40 and 127,999.20

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Solution

The fourth proportional to 202,879.20, 304,568.40 and 127,999.20 is: 192,156.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,879.20 : 304,568.40 = 127,999.20 : x
  2. Step 2: Convert to fraction form
    202,879.20/304,568.40 = 127,999.20/x
  3. Step 3: Cross multiply
    202,879.20x = 304,568.40 × 127,999.20
  4. Step 4: Simplify right side
    202,879.20x = 38,984,511,545.28
  5. Step 5: Solve for x
    x = 38,984,511,545.28/202,879.20
  6. Step 6: Final answer
    x = 192,156.28

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1.5x scale

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.