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Finding the Fourth Proportional to 202,939.60, 304,409.30 and 69,820.96

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Solution

The fourth proportional to 202,939.60, 304,409.30 and 69,820.96 is: 104,731.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,939.60 : 304,409.30 = 69,820.96 : x
  2. Step 2: Convert to fraction form
    202,939.60/304,409.30 = 69,820.96/x
  3. Step 3: Cross multiply
    202,939.60x = 304,409.30 × 69,820.96
  4. Step 4: Simplify right side
    202,939.60x = 21,254,149,558.93
  5. Step 5: Solve for x
    x = 21,254,149,558.93/202,939.60
  6. Step 6: Final answer
    x = 104,731.41

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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.