Home / 420,832.33-631,337.25-136,500.79

Finding the Fourth Proportional to 420,832.33, 631,337.25 and 136,500.79

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Solution

The fourth proportional to 420,832.33, 631,337.25 and 136,500.79 is: 204,779.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,832.33 : 631,337.25 = 136,500.79 : x
  2. Step 2: Convert to fraction form
    420,832.33/631,337.25 = 136,500.79/x
  3. Step 3: Cross multiply
    420,832.33x = 631,337.25 × 136,500.79
  4. Step 4: Simplify right side
    420,832.33x = 86,178,033,381.43
  5. Step 5: Solve for x
    x = 86,178,033,381.43/420,832.33
  6. Step 6: Final answer
    x = 204,779.97

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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.