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Finding the Fourth Proportional to 436,507.56, 654,769.80 and 136,997.88

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Solution

The fourth proportional to 436,507.56, 654,769.80 and 136,997.88 is: 205,499.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,507.56 : 654,769.80 = 136,997.88 : x
  2. Step 2: Convert to fraction form
    436,507.56/654,769.80 = 136,997.88/x
  3. Step 3: Cross multiply
    436,507.56x = 654,769.80 × 136,997.88
  4. Step 4: Simplify right side
    436,507.56x = 89,702,074,488.02
  5. Step 5: Solve for x
    x = 89,702,074,488.02/436,507.56
  6. Step 6: Final answer
    x = 205,499.48

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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.