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Finding the Fourth Proportional to 339,478.17, 509,217.93 and 126,292.83

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Solution

The fourth proportional to 339,478.17, 509,217.93 and 126,292.83 is: 189,439.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,478.17 : 509,217.93 = 126,292.83 : x
  2. Step 2: Convert to fraction form
    339,478.17/509,217.93 = 126,292.83/x
  3. Step 3: Cross multiply
    339,478.17x = 509,217.93 × 126,292.83
  4. Step 4: Simplify right side
    339,478.17x = 64,310,573,466.44
  5. Step 5: Solve for x
    x = 64,310,573,466.44/339,478.17
  6. Step 6: Final answer
    x = 189,439.50

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1.5x scale

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.