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Finding the Fourth Proportional to 253,620.12, 349,991.42 and 140,440.44

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Solution

The fourth proportional to 253,620.12, 349,991.42 and 140,440.44 is: 193,805.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,620.12 : 349,991.42 = 140,440.44 : x
  2. Step 2: Convert to fraction form
    253,620.12/349,991.42 = 140,440.44/x
  3. Step 3: Cross multiply
    253,620.12x = 349,991.42 × 140,440.44
  4. Step 4: Simplify right side
    253,620.12x = 49,152,949,021.02
  5. Step 5: Solve for x
    x = 49,152,949,021.02/253,620.12
  6. Step 6: Final answer
    x = 193,805.40

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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.