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Finding the Fourth Proportional to 228,543.82, 315,391.83 and 126,572.38

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Solution

The fourth proportional to 228,543.82, 315,391.83 and 126,572.38 is: 174,670.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,543.82 : 315,391.83 = 126,572.38 : x
  2. Step 2: Convert to fraction form
    228,543.82/315,391.83 = 126,572.38/x
  3. Step 3: Cross multiply
    228,543.82x = 315,391.83 × 126,572.38
  4. Step 4: Simplify right side
    228,543.82x = 39,919,894,555.66
  5. Step 5: Solve for x
    x = 39,919,894,555.66/228,543.82
  6. Step 6: Final answer
    x = 174,670.64

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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.