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Finding the Fourth Proportional to 351,307.88, 526,638.92 and 126,613.33

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Solution

The fourth proportional to 351,307.88, 526,638.92 and 126,613.33 is: 189,803.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,307.88 : 526,638.92 = 126,613.33 : x
  2. Step 2: Convert to fraction form
    351,307.88/526,638.92 = 126,613.33/x
  3. Step 3: Cross multiply
    351,307.88x = 526,638.92 × 126,613.33
  4. Step 4: Simplify right side
    351,307.88x = 66,679,505,419.14
  5. Step 5: Solve for x
    x = 66,679,505,419.14/351,307.88
  6. Step 6: Final answer
    x = 189,803.61

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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.