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Finding the Fourth Proportional to 284,137.20, 426,666.60 and 205,801.20

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Solution

The fourth proportional to 284,137.20, 426,666.60 and 205,801.20 is: 309,035.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,137.20 : 426,666.60 = 205,801.20 : x
  2. Step 2: Convert to fraction form
    284,137.20/426,666.60 = 205,801.20/x
  3. Step 3: Cross multiply
    284,137.20x = 426,666.60 × 205,801.20
  4. Step 4: Simplify right side
    284,137.20x = 87,808,498,279.92
  5. Step 5: Solve for x
    x = 87,808,498,279.92/284,137.20
  6. Step 6: Final answer
    x = 309,035.56

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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.