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Finding the Fourth Proportional to 355,378.69, 533,317.11 and 205,412.61

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Solution

The fourth proportional to 355,378.69, 533,317.11 and 205,412.61 is: 308,262.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,378.69 : 533,317.11 = 205,412.61 : x
  2. Step 2: Convert to fraction form
    355,378.69/533,317.11 = 205,412.61/x
  3. Step 3: Cross multiply
    355,378.69x = 533,317.11 × 205,412.61
  4. Step 4: Simplify right side
    355,378.69x = 109,550,058,907.94
  5. Step 5: Solve for x
    x = 109,550,058,907.94/355,378.69
  6. Step 6: Final answer
    x = 308,262.88

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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.