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Finding the Fourth Proportional to 378,176.80, 567,265.20 and 331,520.80

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Solution

The fourth proportional to 378,176.80, 567,265.20 and 331,520.80 is: 497,281.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,176.80 : 567,265.20 = 331,520.80 : x
  2. Step 2: Convert to fraction form
    378,176.80/567,265.20 = 331,520.80/x
  3. Step 3: Cross multiply
    378,176.80x = 567,265.20 × 331,520.80
  4. Step 4: Simplify right side
    378,176.80x = 188,060,212,916.16
  5. Step 5: Solve for x
    x = 188,060,212,916.16/378,176.80
  6. Step 6: Final answer
    x = 497,281.20

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1.5x scale

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.