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Finding the Fourth Proportional to 351,457.89, 527,077.86 and 126,789.12

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Solution

The fourth proportional to 351,457.89, 527,077.86 and 126,789.12 is: 190,144.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,457.89 : 527,077.86 = 126,789.12 : x
  2. Step 2: Convert to fraction form
    351,457.89/527,077.86 = 126,789.12/x
  3. Step 3: Cross multiply
    351,457.89x = 527,077.86 × 126,789.12
  4. Step 4: Simplify right side
    351,457.89x = 66,827,739,404.42
  5. Step 5: Solve for x
    x = 66,827,739,404.42/351,457.89
  6. Step 6: Final answer
    x = 190,144.37

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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.