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Finding the Fourth Proportional to 540,978.03, 811,540.89 and 225,361.14

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Solution

The fourth proportional to 540,978.03, 811,540.89 and 225,361.14 is: 338,072.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,978.03 : 811,540.89 = 225,361.14 : x
  2. Step 2: Convert to fraction form
    540,978.03/811,540.89 = 225,361.14/x
  3. Step 3: Cross multiply
    540,978.03x = 811,540.89 × 225,361.14
  4. Step 4: Simplify right side
    540,978.03x = 182,889,780,127.02
  5. Step 5: Solve for x
    x = 182,889,780,127.02/540,978.03
  6. Step 6: Final answer
    x = 338,072.47

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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.