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Finding the Fourth Proportional to 228,701.98, 315,615.65 and 126,717.90

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Solution

The fourth proportional to 228,701.98, 315,615.65 and 126,717.90 is: 174,874.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,701.98 : 315,615.65 = 126,717.90 : x
  2. Step 2: Convert to fraction form
    228,701.98/315,615.65 = 126,717.90/x
  3. Step 3: Cross multiply
    228,701.98x = 315,615.65 × 126,717.90
  4. Step 4: Simplify right side
    228,701.98x = 39,994,152,691.93
  5. Step 5: Solve for x
    x = 39,994,152,691.93/228,701.98
  6. Step 6: Final answer
    x = 174,874.54

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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.