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Finding the Fourth Proportional to 228,935.70, 343,403.55 and 220,187.70

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Solution

The fourth proportional to 228,935.70, 343,403.55 and 220,187.70 is: 330,281.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,935.70 : 343,403.55 = 220,187.70 : x
  2. Step 2: Convert to fraction form
    228,935.70/343,403.55 = 220,187.70/x
  3. Step 3: Cross multiply
    228,935.70x = 343,403.55 × 220,187.70
  4. Step 4: Simplify right side
    228,935.70x = 75,613,237,846.34
  5. Step 5: Solve for x
    x = 75,613,237,846.34/228,935.70
  6. Step 6: Final answer
    x = 330,281.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.