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Finding the Fourth Proportional to 315,473.70, 435,287.22 and 200,710.92

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Solution

The fourth proportional to 315,473.70, 435,287.22 and 200,710.92 is: 276,938.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,473.70 : 435,287.22 = 200,710.92 : x
  2. Step 2: Convert to fraction form
    315,473.70/435,287.22 = 200,710.92/x
  3. Step 3: Cross multiply
    315,473.70x = 435,287.22 × 200,710.92
  4. Step 4: Simplify right side
    315,473.70x = 87,366,898,390.44
  5. Step 5: Solve for x
    x = 87,366,898,390.44/315,473.70
  6. Step 6: Final answer
    x = 276,938.77

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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.