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Finding the Fourth Proportional to 339,880.50, 469,035.90 and 189,006.66

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Solution

The fourth proportional to 339,880.50, 469,035.90 and 189,006.66 is: 260,829.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,880.50 : 469,035.90 = 189,006.66 : x
  2. Step 2: Convert to fraction form
    339,880.50/469,035.90 = 189,006.66/x
  3. Step 3: Cross multiply
    339,880.50x = 469,035.90 × 189,006.66
  4. Step 4: Simplify right side
    339,880.50x = 88,650,908,879.09
  5. Step 5: Solve for x
    x = 88,650,908,879.09/339,880.50
  6. Step 6: Final answer
    x = 260,829.64

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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.