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Finding the Fourth Proportional to 343,530.82, 515,299.55 and 130,241.37

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Solution

The fourth proportional to 343,530.82, 515,299.55 and 130,241.37 is: 195,363.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,530.82 : 515,299.55 = 130,241.37 : x
  2. Step 2: Convert to fraction form
    343,530.82/515,299.55 = 130,241.37/x
  3. Step 3: Cross multiply
    343,530.82x = 515,299.55 × 130,241.37
  4. Step 4: Simplify right side
    343,530.82x = 67,113,318,701.18
  5. Step 5: Solve for x
    x = 67,113,318,701.18/343,530.82
  6. Step 6: Final answer
    x = 195,363.31

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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.