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Finding the Fourth Proportional to 228,369.27, 315,127.91 and 154,631.49

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Solution

The fourth proportional to 228,369.27, 315,127.91 and 154,631.49 is: 213,376.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,369.27 : 315,127.91 = 154,631.49 : x
  2. Step 2: Convert to fraction form
    228,369.27/315,127.91 = 154,631.49/x
  3. Step 3: Cross multiply
    228,369.27x = 315,127.91 × 154,631.49
  4. Step 4: Simplify right side
    228,369.27x = 48,728,698,597.23
  5. Step 5: Solve for x
    x = 48,728,698,597.23/228,369.27
  6. Step 6: Final answer
    x = 213,376.77

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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.