Home / 420,500.81-631,029.80-231,093.46

Finding the Fourth Proportional to 420,500.81, 631,029.80 and 231,093.46

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Solution

The fourth proportional to 420,500.81, 631,029.80 and 231,093.46 is: 346,793.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,500.81 : 631,029.80 = 231,093.46 : x
  2. Step 2: Convert to fraction form
    420,500.81/631,029.80 = 231,093.46/x
  3. Step 3: Cross multiply
    420,500.81x = 631,029.80 × 231,093.46
  4. Step 4: Simplify right side
    420,500.81x = 145,826,857,987.06
  5. Step 5: Solve for x
    x = 145,826,857,987.06/420,500.81
  6. Step 6: Final answer
    x = 346,793.29

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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.