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Finding the Fourth Proportional to 345,833.78, 518,796.04 and 135,444.38

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Solution

The fourth proportional to 345,833.78, 518,796.04 and 135,444.38 is: 203,184.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,833.78 : 518,796.04 = 135,444.38 : x
  2. Step 2: Convert to fraction form
    345,833.78/518,796.04 = 135,444.38/x
  3. Step 3: Cross multiply
    345,833.78x = 518,796.04 × 135,444.38
  4. Step 4: Simplify right side
    345,833.78x = 70,268,007,984.26
  5. Step 5: Solve for x
    x = 70,268,007,984.26/345,833.78
  6. Step 6: Final answer
    x = 203,184.34

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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.