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Finding the Fourth Proportional to 228,593.56, 315,408.18 and 137,964.28

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Solution

The fourth proportional to 228,593.56, 315,408.18 and 137,964.28 is: 190,359.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,593.56 : 315,408.18 = 137,964.28 : x
  2. Step 2: Convert to fraction form
    228,593.56/315,408.18 = 137,964.28/x
  3. Step 3: Cross multiply
    228,593.56x = 315,408.18 × 137,964.28
  4. Step 4: Simplify right side
    228,593.56x = 43,515,062,459.81
  5. Step 5: Solve for x
    x = 43,515,062,459.81/228,593.56
  6. Step 6: Final answer
    x = 190,359.97

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1.5x scale

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.