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Finding the Fourth Proportional to 539,991.48, 745,183.56 and 298,290.93

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Solution

The fourth proportional to 539,991.48, 745,183.56 and 298,290.93 is: 411,638.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,991.48 : 745,183.56 = 298,290.93 : x
  2. Step 2: Convert to fraction form
    539,991.48/745,183.56 = 298,290.93/x
  3. Step 3: Cross multiply
    539,991.48x = 745,183.56 × 298,290.93
  4. Step 4: Simplify right side
    539,991.48x = 222,281,497,133.11
  5. Step 5: Solve for x
    x = 222,281,497,133.11/539,991.48
  6. Step 6: Final answer
    x = 411,638.90

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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.