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Finding the Fourth Proportional to 202,293.40, 303,112.05 and 127,279.30

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Solution

The fourth proportional to 202,293.40, 303,112.05 and 127,279.30 is: 190,712.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,293.40 : 303,112.05 = 127,279.30 : x
  2. Step 2: Convert to fraction form
    202,293.40/303,112.05 = 127,279.30/x
  3. Step 3: Cross multiply
    202,293.40x = 303,112.05 × 127,279.30
  4. Step 4: Simplify right side
    202,293.40x = 38,579,889,545.57
  5. Step 5: Solve for x
    x = 38,579,889,545.57/202,293.40
  6. Step 6: Final answer
    x = 190,712.55

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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.