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Finding the Fourth Proportional to 251,679.33, 347,317.53 and 138,502.08

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Solution

The fourth proportional to 251,679.33, 347,317.53 and 138,502.08 is: 191,132.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,679.33 : 347,317.53 = 138,502.08 : x
  2. Step 2: Convert to fraction form
    251,679.33/347,317.53 = 138,502.08/x
  3. Step 3: Cross multiply
    251,679.33x = 347,317.53 × 138,502.08
  4. Step 4: Simplify right side
    251,679.33x = 48,104,200,847.50
  5. Step 5: Solve for x
    x = 48,104,200,847.50/251,679.33
  6. Step 6: Final answer
    x = 191,132.90

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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.