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Finding the Fourth Proportional to 539,871.88, 745,028.81 and 298,160.59

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Solution

The fourth proportional to 539,871.88, 745,028.81 and 298,160.59 is: 411,464.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,871.88 : 745,028.81 = 298,160.59 : x
  2. Step 2: Convert to fraction form
    539,871.88/745,028.81 = 298,160.59/x
  3. Step 3: Cross multiply
    539,871.88x = 745,028.81 × 298,160.59
  4. Step 4: Simplify right side
    539,871.88x = 222,138,229,556.60
  5. Step 5: Solve for x
    x = 222,138,229,556.60/539,871.88
  6. Step 6: Final answer
    x = 411,464.72

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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.