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Finding the Fourth Proportional to 283,243.56, 390,876.06 and 155,919.12

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Solution

The fourth proportional to 283,243.56, 390,876.06 and 155,919.12 is: 215,168.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,243.56 : 390,876.06 = 155,919.12 : x
  2. Step 2: Convert to fraction form
    283,243.56/390,876.06 = 155,919.12/x
  3. Step 3: Cross multiply
    283,243.56x = 390,876.06 × 155,919.12
  4. Step 4: Simplify right side
    283,243.56x = 60,945,051,304.27
  5. Step 5: Solve for x
    x = 60,945,051,304.27/283,243.56
  6. Step 6: Final answer
    x = 215,168.36

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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.