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Finding the Fourth Proportional to 550,378.34, 759,528.48 and 305,367.71

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Solution

The fourth proportional to 550,378.34, 759,528.48 and 305,367.71 is: 421,410.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,378.34 : 759,528.48 = 305,367.71 : x
  2. Step 2: Convert to fraction form
    550,378.34/759,528.48 = 305,367.71/x
  3. Step 3: Cross multiply
    550,378.34x = 759,528.48 × 305,367.71
  4. Step 4: Simplify right side
    550,378.34x = 231,935,472,617.38
  5. Step 5: Solve for x
    x = 231,935,472,617.38/550,378.34
  6. Step 6: Final answer
    x = 421,410.97

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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.