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Finding the Fourth Proportional to 228,474.88, 315,299.52 and 127,872.64

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Solution

The fourth proportional to 228,474.88, 315,299.52 and 127,872.64 is: 176,466.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,474.88 : 315,299.52 = 127,872.64 : x
  2. Step 2: Convert to fraction form
    228,474.88/315,299.52 = 127,872.64/x
  3. Step 3: Cross multiply
    228,474.88x = 315,299.52 × 127,872.64
  4. Step 4: Simplify right side
    228,474.88x = 40,318,182,013.13
  5. Step 5: Solve for x
    x = 40,318,182,013.13/228,474.88
  6. Step 6: Final answer
    x = 176,466.59

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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.