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Finding the Fourth Proportional to 351,573.32, 485,145.99 and 206,385.00

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Solution

The fourth proportional to 351,573.32, 485,145.99 and 206,385.00 is: 284,796.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,573.32 : 485,145.99 = 206,385.00 : x
  2. Step 2: Convert to fraction form
    351,573.32/485,145.99 = 206,385.00/x
  3. Step 3: Cross multiply
    351,573.32x = 485,145.99 × 206,385.00
  4. Step 4: Simplify right side
    351,573.32x = 100,126,855,271.78
  5. Step 5: Solve for x
    x = 100,126,855,271.78/351,573.32
  6. Step 6: Final answer
    x = 284,796.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.