Home / 420,505.50-631,036.82-231,098.12

Finding the Fourth Proportional to 420,505.50, 631,036.82 and 231,098.12

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Solution

The fourth proportional to 420,505.50, 631,036.82 and 231,098.12 is: 346,800.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,505.50 : 631,036.82 = 231,098.12 : x
  2. Step 2: Convert to fraction form
    420,505.50/631,036.82 = 231,098.12/x
  3. Step 3: Cross multiply
    420,505.50x = 631,036.82 × 231,098.12
  4. Step 4: Simplify right side
    420,505.50x = 145,831,422,752.78
  5. Step 5: Solve for x
    x = 145,831,422,752.78/420,505.50
  6. Step 6: Final answer
    x = 346,800.27

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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.