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Finding the Fourth Proportional to 252,653.88, 348,653.20 and 139,474.20

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Solution

The fourth proportional to 252,653.88, 348,653.20 and 139,474.20 is: 192,469.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,653.88 : 348,653.20 = 139,474.20 : x
  2. Step 2: Convert to fraction form
    252,653.88/348,653.20 = 139,474.20/x
  3. Step 3: Cross multiply
    252,653.88x = 348,653.20 × 139,474.20
  4. Step 4: Simplify right side
    252,653.88x = 48,628,126,147.44
  5. Step 5: Solve for x
    x = 48,628,126,147.44/252,653.88
  6. Step 6: Final answer
    x = 192,469.34

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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.