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Finding the Fourth Proportional to 203,472.78, 280,791.03 and 112,828.80

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Solution

The fourth proportional to 203,472.78, 280,791.03 and 112,828.80 is: 155,702.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,472.78 : 280,791.03 = 112,828.80 : x
  2. Step 2: Convert to fraction form
    203,472.78/280,791.03 = 112,828.80/x
  3. Step 3: Cross multiply
    203,472.78x = 280,791.03 × 112,828.80
  4. Step 4: Simplify right side
    203,472.78x = 31,681,314,965.66
  5. Step 5: Solve for x
    x = 31,681,314,965.66/203,472.78
  6. Step 6: Final answer
    x = 155,702.96

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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.