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Finding the Fourth Proportional to 228,861.99, 315,848.16 and 126,897.57

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Solution

The fourth proportional to 228,861.99, 315,848.16 and 126,897.57 is: 175,128.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,861.99 : 315,848.16 = 126,897.57 : x
  2. Step 2: Convert to fraction form
    228,861.99/315,848.16 = 126,897.57/x
  3. Step 3: Cross multiply
    228,861.99x = 315,848.16 × 126,897.57
  4. Step 4: Simplify right side
    228,861.99x = 40,080,363,992.97
  5. Step 5: Solve for x
    x = 40,080,363,992.97/228,861.99
  6. Step 6: Final answer
    x = 175,128.97

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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.