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Finding the Fourth Proportional to 539,908.66, 745,043.27 and 310,429.48

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Solution

The fourth proportional to 539,908.66, 745,043.27 and 310,429.48 is: 428,375.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,908.66 : 745,043.27 = 310,429.48 : x
  2. Step 2: Convert to fraction form
    539,908.66/745,043.27 = 310,429.48/x
  3. Step 3: Cross multiply
    539,908.66x = 745,043.27 × 310,429.48
  4. Step 4: Simplify right side
    539,908.66x = 231,283,394,883.60
  5. Step 5: Solve for x
    x = 231,283,394,883.60/539,908.66
  6. Step 6: Final answer
    x = 428,375.04

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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.