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Finding the Fourth Proportional to 355,563.20, 534,511.20 and 251,105.60

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Solution

The fourth proportional to 355,563.20, 534,511.20 and 251,105.60 is: 377,482.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,563.20 : 534,511.20 = 251,105.60 : x
  2. Step 2: Convert to fraction form
    355,563.20/534,511.20 = 251,105.60/x
  3. Step 3: Cross multiply
    355,563.20x = 534,511.20 × 251,105.60
  4. Step 4: Simplify right side
    355,563.20x = 134,218,755,582.72
  5. Step 5: Solve for x
    x = 134,218,755,582.72/355,563.20
  6. Step 6: Final answer
    x = 377,482.13

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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.