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Finding the Fourth Proportional to 228,630.75, 315,506.18 and 126,653.96

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Solution

The fourth proportional to 228,630.75, 315,506.18 and 126,653.96 is: 174,780.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,630.75 : 315,506.18 = 126,653.96 : x
  2. Step 2: Convert to fraction form
    228,630.75/315,506.18 = 126,653.96/x
  3. Step 3: Cross multiply
    228,630.75x = 315,506.18 × 126,653.96
  4. Step 4: Simplify right side
    228,630.75x = 39,960,104,890.67
  5. Step 5: Solve for x
    x = 39,960,104,890.67/228,630.75
  6. Step 6: Final answer
    x = 174,780.10

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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.