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Finding the Fourth Proportional to 245,203.70, 367,805.55 and 126,911.30

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Solution

The fourth proportional to 245,203.70, 367,805.55 and 126,911.30 is: 190,366.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,203.70 : 367,805.55 = 126,911.30 : x
  2. Step 2: Convert to fraction form
    245,203.70/367,805.55 = 126,911.30/x
  3. Step 3: Cross multiply
    245,203.70x = 367,805.55 × 126,911.30
  4. Step 4: Simplify right side
    245,203.70x = 46,678,680,497.72
  5. Step 5: Solve for x
    x = 46,678,680,497.72/245,203.70
  6. Step 6: Final answer
    x = 190,366.95

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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.