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Finding the Fourth Proportional to 203,361.64, 280,655.88 and 112,746.04

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Solution

The fourth proportional to 203,361.64, 280,655.88 and 112,746.04 is: 155,598.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,361.64 : 280,655.88 = 112,746.04 : x
  2. Step 2: Convert to fraction form
    203,361.64/280,655.88 = 112,746.04/x
  3. Step 3: Cross multiply
    203,361.64x = 280,655.88 × 112,746.04
  4. Step 4: Simplify right side
    203,361.64x = 31,642,839,072.72
  5. Step 5: Solve for x
    x = 31,642,839,072.72/203,361.64
  6. Step 6: Final answer
    x = 155,598.86

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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.