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Finding the Fourth Proportional to 254,608.95, 351,361.32 and 139,896.87

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Solution

The fourth proportional to 254,608.95, 351,361.32 and 139,896.87 is: 193,058.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,608.95 : 351,361.32 = 139,896.87 : x
  2. Step 2: Convert to fraction form
    254,608.95/351,361.32 = 139,896.87/x
  3. Step 3: Cross multiply
    254,608.95x = 351,361.32 × 139,896.87
  4. Step 4: Simplify right side
    254,608.95x = 49,154,348,907.07
  5. Step 5: Solve for x
    x = 49,154,348,907.07/254,608.95
  6. Step 6: Final answer
    x = 193,058.21

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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.