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Finding the Fourth Proportional to 202,912.63, 280,020.38 and 113,488.63

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Solution

The fourth proportional to 202,912.63, 280,020.38 and 113,488.63 is: 156,614.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,912.63 : 280,020.38 = 113,488.63 : x
  2. Step 2: Convert to fraction form
    202,912.63/280,020.38 = 113,488.63/x
  3. Step 3: Cross multiply
    202,912.63x = 280,020.38 × 113,488.63
  4. Step 4: Simplify right side
    202,912.63x = 31,779,128,181.90
  5. Step 5: Solve for x
    x = 31,779,128,181.90/202,912.63
  6. Step 6: Final answer
    x = 156,614.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.