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Finding the Fourth Proportional to 251,986.02, 347,744.88 and 138,808.86

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Solution

The fourth proportional to 251,986.02, 347,744.88 and 138,808.86 is: 191,558.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,986.02 : 347,744.88 = 138,808.86 : x
  2. Step 2: Convert to fraction form
    251,986.02/347,744.88 = 138,808.86/x
  3. Step 3: Cross multiply
    251,986.02x = 347,744.88 × 138,808.86
  4. Step 4: Simplify right side
    251,986.02x = 48,270,070,363.64
  5. Step 5: Solve for x
    x = 48,270,070,363.64/251,986.02
  6. Step 6: Final answer
    x = 191,558.53

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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.