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Finding the Fourth Proportional to 344,991.57, 517,299.63 and 120,291.90

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Solution

The fourth proportional to 344,991.57, 517,299.63 and 120,291.90 is: 180,372.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,991.57 : 517,299.63 = 120,291.90 : x
  2. Step 2: Convert to fraction form
    344,991.57/517,299.63 = 120,291.90/x
  3. Step 3: Cross multiply
    344,991.57x = 517,299.63 × 120,291.90
  4. Step 4: Simplify right side
    344,991.57x = 62,226,952,971.03
  5. Step 5: Solve for x
    x = 62,226,952,971.03/344,991.57
  6. Step 6: Final answer
    x = 180,372.39

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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.