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Finding the Fourth Proportional to 331,404.80, 497,107.20 and 303,411.20

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Solution

The fourth proportional to 331,404.80, 497,107.20 and 303,411.20 is: 455,116.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,404.80 : 497,107.20 = 303,411.20 : x
  2. Step 2: Convert to fraction form
    331,404.80/497,107.20 = 303,411.20/x
  3. Step 3: Cross multiply
    331,404.80x = 497,107.20 × 303,411.20
  4. Step 4: Simplify right side
    331,404.80x = 150,827,892,080.64
  5. Step 5: Solve for x
    x = 150,827,892,080.64/331,404.80
  6. Step 6: Final answer
    x = 455,116.80

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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.