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Finding the Fourth Proportional to 228,575.70, 315,435.36 and 133,147.98

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Solution

The fourth proportional to 228,575.70, 315,435.36 and 133,147.98 is: 183,744.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,575.70 : 315,435.36 = 133,147.98 : x
  2. Step 2: Convert to fraction form
    228,575.70/315,435.36 = 133,147.98/x
  3. Step 3: Cross multiply
    228,575.70x = 315,435.36 × 133,147.98
  4. Step 4: Simplify right side
    228,575.70x = 41,999,581,004.57
  5. Step 5: Solve for x
    x = 41,999,581,004.57/228,575.70
  6. Step 6: Final answer
    x = 183,744.73

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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.