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Finding the Fourth Proportional to 331,402.80, 497,104.20 and 303,409.20

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Solution

The fourth proportional to 331,402.80, 497,104.20 and 303,409.20 is: 455,113.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,402.80 : 497,104.20 = 303,409.20 : x
  2. Step 2: Convert to fraction form
    331,402.80/497,104.20 = 303,409.20/x
  3. Step 3: Cross multiply
    331,402.80x = 497,104.20 × 303,409.20
  4. Step 4: Simplify right side
    331,402.80x = 150,825,987,638.64
  5. Step 5: Solve for x
    x = 150,825,987,638.64/331,402.80
  6. Step 6: Final answer
    x = 455,113.80

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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.