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Finding the Fourth Proportional to 228,601.58, 315,474.64 and 136,815.36

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Solution

The fourth proportional to 228,601.58, 315,474.64 and 136,815.36 is: 188,807.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,601.58 : 315,474.64 = 136,815.36 : x
  2. Step 2: Convert to fraction form
    228,601.58/315,474.64 = 136,815.36/x
  3. Step 3: Cross multiply
    228,601.58x = 315,474.64 × 136,815.36
  4. Step 4: Simplify right side
    228,601.58x = 43,161,776,442.47
  5. Step 5: Solve for x
    x = 43,161,776,442.47/228,601.58
  6. Step 6: Final answer
    x = 188,807.87

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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.