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Finding the Fourth Proportional to 251,487.56, 347,060.10 and 138,317.60

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Solution

The fourth proportional to 251,487.56, 347,060.10 and 138,317.60 is: 190,882.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,487.56 : 347,060.10 = 138,317.60 : x
  2. Step 2: Convert to fraction form
    251,487.56/347,060.10 = 138,317.60/x
  3. Step 3: Cross multiply
    251,487.56x = 347,060.10 × 138,317.60
  4. Step 4: Simplify right side
    251,487.56x = 48,004,520,087.76
  5. Step 5: Solve for x
    x = 48,004,520,087.76/251,487.56
  6. Step 6: Final answer
    x = 190,882.28

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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.