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Finding the Fourth Proportional to 228,293.56, 315,171.80 and 137,672.48

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Solution

The fourth proportional to 228,293.56, 315,171.80 and 137,672.48 is: 190,064.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,293.56 : 315,171.80 = 137,672.48 : x
  2. Step 2: Convert to fraction form
    228,293.56/315,171.80 = 137,672.48/x
  3. Step 3: Cross multiply
    228,293.56x = 315,171.80 × 137,672.48
  4. Step 4: Simplify right side
    228,293.56x = 43,390,483,332.06
  5. Step 5: Solve for x
    x = 43,390,483,332.06/228,293.56
  6. Step 6: Final answer
    x = 190,064.42

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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.