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Finding the Fourth Proportional to 251,701.36, 347,347.68 and 138,524.20

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Solution

The fourth proportional to 251,701.36, 347,347.68 and 138,524.20 is: 191,163.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,701.36 : 347,347.68 = 138,524.20 : x
  2. Step 2: Convert to fraction form
    251,701.36/347,347.68 = 138,524.20/x
  3. Step 3: Cross multiply
    251,701.36x = 347,347.68 × 138,524.20
  4. Step 4: Simplify right side
    251,701.36x = 48,116,059,493.86
  5. Step 5: Solve for x
    x = 48,116,059,493.86/251,701.36
  6. Step 6: Final answer
    x = 191,163.29

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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.