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Finding the Fourth Proportional to 203,361.40, 280,655.54 and 112,745.80

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Solution

The fourth proportional to 203,361.40, 280,655.54 and 112,745.80 is: 155,598.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,361.40 : 280,655.54 = 112,745.80 : x
  2. Step 2: Convert to fraction form
    203,361.40/280,655.54 = 112,745.80/x
  3. Step 3: Cross multiply
    203,361.40x = 280,655.54 × 112,745.80
  4. Step 4: Simplify right side
    203,361.40x = 31,642,733,381.73
  5. Step 5: Solve for x
    x = 31,642,733,381.73/203,361.40
  6. Step 6: Final answer
    x = 155,598.52

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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.