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Finding the Fourth Proportional to 343,477.80, 515,118.24 and 115,748.61

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Solution

The fourth proportional to 343,477.80, 515,118.24 and 115,748.61 is: 173,589.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,477.80 : 515,118.24 = 115,748.61 : x
  2. Step 2: Convert to fraction form
    343,477.80/515,118.24 = 115,748.61/x
  3. Step 3: Cross multiply
    343,477.80x = 515,118.24 × 115,748.61
  4. Step 4: Simplify right side
    343,477.80x = 59,624,220,265.65
  5. Step 5: Solve for x
    x = 59,624,220,265.65/343,477.80
  6. Step 6: Final answer
    x = 173,589.73

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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.