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Finding the Fourth Proportional to 253,062.54, 349,212.60 and 139,878

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Solution

The fourth proportional to 253,062.54, 349,212.60 and 139,878 is: 193,024.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,062.54 : 349,212.60 = 139,878 : x
  2. Step 2: Convert to fraction form
    253,062.54/349,212.60 = 139,878/x
  3. Step 3: Cross multiply
    253,062.54x = 349,212.60 × 139,878
  4. Step 4: Simplify right side
    253,062.54x = 48,847,160,062.80
  5. Step 5: Solve for x
    x = 48,847,160,062.80/253,062.54
  6. Step 6: Final answer
    x = 193,024.06

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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.