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Finding the Fourth Proportional to 398,773.40, 550,491.57 and 245,838.92

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Solution

The fourth proportional to 398,773.40, 550,491.57 and 245,838.92 is: 339,371.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,773.40 : 550,491.57 = 245,838.92 : x
  2. Step 2: Convert to fraction form
    398,773.40/550,491.57 = 245,838.92/x
  3. Step 3: Cross multiply
    398,773.40x = 550,491.57 × 245,838.92
  4. Step 4: Simplify right side
    398,773.40x = 135,332,253,037.90
  5. Step 5: Solve for x
    x = 135,332,253,037.90/398,773.40
  6. Step 6: Final answer
    x = 339,371.31

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1.5x scale

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.