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Finding the Fourth Proportional to 344,958.78, 517,440.47 and 120,318.38

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Solution

The fourth proportional to 344,958.78, 517,440.47 and 120,318.38 is: 180,478.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,958.78 : 517,440.47 = 120,318.38 : x
  2. Step 2: Convert to fraction form
    344,958.78/517,440.47 = 120,318.38/x
  3. Step 3: Cross multiply
    344,958.78x = 517,440.47 × 120,318.38
  4. Step 4: Simplify right side
    344,958.78x = 62,257,595,908.04
  5. Step 5: Solve for x
    x = 62,257,595,908.04/344,958.78
  6. Step 6: Final answer
    x = 180,478.36

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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.