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Finding the Fourth Proportional to 398,785.82, 550,225.98 and 235,446.14

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Solution

The fourth proportional to 398,785.82, 550,225.98 and 235,446.14 is: 324,857.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,785.82 : 550,225.98 = 235,446.14 : x
  2. Step 2: Convert to fraction form
    398,785.82/550,225.98 = 235,446.14/x
  3. Step 3: Cross multiply
    398,785.82x = 550,225.98 × 235,446.14
  4. Step 4: Simplify right side
    398,785.82x = 129,548,581,509.03
  5. Step 5: Solve for x
    x = 129,548,581,509.03/398,785.82
  6. Step 6: Final answer
    x = 324,857.54

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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.