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Finding the Fourth Proportional to 543,080.89, 749,390.80 and 301,373.65

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Solution

The fourth proportional to 543,080.89, 749,390.80 and 301,373.65 is: 415,861.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,080.89 : 749,390.80 = 301,373.65 : x
  2. Step 2: Convert to fraction form
    543,080.89/749,390.80 = 301,373.65/x
  3. Step 3: Cross multiply
    543,080.89x = 749,390.80 × 301,373.65
  4. Step 4: Simplify right side
    543,080.89x = 225,846,640,672.42
  5. Step 5: Solve for x
    x = 225,846,640,672.42/543,080.89
  6. Step 6: Final answer
    x = 415,861.88

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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.