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Finding the Fourth Proportional to 203,476.78, 280,796.55 and 112,832.80

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Solution

The fourth proportional to 203,476.78, 280,796.55 and 112,832.80 is: 155,708.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,476.78 : 280,796.55 = 112,832.80 : x
  2. Step 2: Convert to fraction form
    203,476.78/280,796.55 = 112,832.80/x
  3. Step 3: Cross multiply
    203,476.78x = 280,796.55 × 112,832.80
  4. Step 4: Simplify right side
    203,476.78x = 31,683,060,966.84
  5. Step 5: Solve for x
    x = 31,683,060,966.84/203,476.78
  6. Step 6: Final answer
    x = 155,708.48

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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.