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Finding the Fourth Proportional to 373,656.72, 515,657.64 and 212,534.96

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Solution

The fourth proportional to 373,656.72, 515,657.64 and 212,534.96 is: 293,304.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,656.72 : 515,657.64 = 212,534.96 : x
  2. Step 2: Convert to fraction form
    373,656.72/515,657.64 = 212,534.96/x
  3. Step 3: Cross multiply
    373,656.72x = 515,657.64 × 212,534.96
  4. Step 4: Simplify right side
    373,656.72x = 109,595,275,891.09
  5. Step 5: Solve for x
    x = 109,595,275,891.09/373,656.72
  6. Step 6: Final answer
    x = 293,304.71

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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.