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Finding the Fourth Proportional to 251,549.94, 347,131.98 and 138,372.78

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Solution

The fourth proportional to 251,549.94, 347,131.98 and 138,372.78 is: 190,950.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,549.94 : 347,131.98 = 138,372.78 : x
  2. Step 2: Convert to fraction form
    251,549.94/347,131.98 = 138,372.78/x
  3. Step 3: Cross multiply
    251,549.94x = 347,131.98 × 138,372.78
  4. Step 4: Simplify right side
    251,549.94x = 48,033,617,099.50
  5. Step 5: Solve for x
    x = 48,033,617,099.50/251,549.94
  6. Step 6: Final answer
    x = 190,950.62

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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.