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Finding the Fourth Proportional to 253,608.47, 349,990.77 and 140,431.22

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Solution

The fourth proportional to 253,608.47, 349,990.77 and 140,431.22 is: 193,801.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,608.47 : 349,990.77 = 140,431.22 : x
  2. Step 2: Convert to fraction form
    253,608.47/349,990.77 = 140,431.22/x
  3. Step 3: Cross multiply
    253,608.47x = 349,990.77 × 140,431.22
  4. Step 4: Simplify right side
    253,608.47x = 49,149,630,908.97
  5. Step 5: Solve for x
    x = 49,149,630,908.97/253,608.47
  6. Step 6: Final answer
    x = 193,801.22

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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.