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Finding the Fourth Proportional to 251,514.72, 347,096.88 and 138,340.44

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Solution

The fourth proportional to 251,514.72, 347,096.88 and 138,340.44 is: 190,913.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,514.72 : 347,096.88 = 138,340.44 : x
  2. Step 2: Convert to fraction form
    251,514.72/347,096.88 = 138,340.44/x
  3. Step 3: Cross multiply
    251,514.72x = 347,096.88 × 138,340.44
  4. Step 4: Simplify right side
    251,514.72x = 48,017,535,101.83
  5. Step 5: Solve for x
    x = 48,017,535,101.83/251,514.72
  6. Step 6: Final answer
    x = 190,913.42

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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.