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Finding the Fourth Proportional to 228,627.06, 315,516.48 and 137,981.37

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Solution

The fourth proportional to 228,627.06, 315,516.48 and 137,981.37 is: 190,421.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,627.06 : 315,516.48 = 137,981.37 : x
  2. Step 2: Convert to fraction form
    228,627.06/315,516.48 = 137,981.37/x
  3. Step 3: Cross multiply
    228,627.06x = 315,516.48 × 137,981.37
  4. Step 4: Simplify right side
    228,627.06x = 43,535,396,167.98
  5. Step 5: Solve for x
    x = 43,535,396,167.98/228,627.06
  6. Step 6: Final answer
    x = 190,421.01

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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.