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Finding the Fourth Proportional to 228,270.72, 315,012.72 and 127,668.48

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Solution

The fourth proportional to 228,270.72, 315,012.72 and 127,668.48 is: 176,182.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,270.72 : 315,012.72 = 127,668.48 : x
  2. Step 2: Convert to fraction form
    228,270.72/315,012.72 = 127,668.48/x
  3. Step 3: Cross multiply
    228,270.72x = 315,012.72 × 127,668.48
  4. Step 4: Simplify right side
    228,270.72x = 40,217,195,143.07
  5. Step 5: Solve for x
    x = 40,217,195,143.07/228,270.72
  6. Step 6: Final answer
    x = 176,182.01

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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.