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Finding the Fourth Proportional to 555,375.32, 766,423.38 and 300,731.96

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Solution

The fourth proportional to 555,375.32, 766,423.38 and 300,731.96 is: 415,013.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,375.32 : 766,423.38 = 300,731.96 : x
  2. Step 2: Convert to fraction form
    555,375.32/766,423.38 = 300,731.96/x
  3. Step 3: Cross multiply
    555,375.32x = 766,423.38 × 300,731.96
  4. Step 4: Simplify right side
    555,375.32x = 230,488,005,257.23
  5. Step 5: Solve for x
    x = 230,488,005,257.23/555,375.32
  6. Step 6: Final answer
    x = 415,013.05

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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.