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Finding the Fourth Proportional to 325,930.50, 488,613.20 and 126,113.40

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Solution

The fourth proportional to 325,930.50, 488,613.20 and 126,113.40 is: 189,060.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,930.50 : 488,613.20 = 126,113.40 : x
  2. Step 2: Convert to fraction form
    325,930.50/488,613.20 = 126,113.40/x
  3. Step 3: Cross multiply
    325,930.50x = 488,613.20 × 126,113.40
  4. Step 4: Simplify right side
    325,930.50x = 61,620,671,306.31
  5. Step 5: Solve for x
    x = 61,620,671,306.31/325,930.50
  6. Step 6: Final answer
    x = 189,060.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.