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Finding the Fourth Proportional to 253,371.55, 349,652.73 and 138,650.22

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Solution

The fourth proportional to 253,371.55, 349,652.73 and 138,650.22 is: 191,337.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,371.55 : 349,652.73 = 138,650.22 : x
  2. Step 2: Convert to fraction form
    253,371.55/349,652.73 = 138,650.22/x
  3. Step 3: Cross multiply
    253,371.55x = 349,652.73 × 138,650.22
  4. Step 4: Simplify right side
    253,371.55x = 48,479,427,893.22
  5. Step 5: Solve for x
    x = 48,479,427,893.22/253,371.55
  6. Step 6: Final answer
    x = 191,337.30

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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.