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Finding the Fourth Proportional to 254,207.58, 380,948.49 and 129,636.06

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Solution

The fourth proportional to 254,207.58, 380,948.49 and 129,636.06 is: 194,269.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,207.58 : 380,948.49 = 129,636.06 : x
  2. Step 2: Convert to fraction form
    254,207.58/380,948.49 = 129,636.06/x
  3. Step 3: Cross multiply
    254,207.58x = 380,948.49 × 129,636.06
  4. Step 4: Simplify right side
    254,207.58x = 49,384,661,306.55
  5. Step 5: Solve for x
    x = 49,384,661,306.55/254,207.58
  6. Step 6: Final answer
    x = 194,269.04

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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.