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Finding the Fourth Proportional to 404,780.40, 605,615.40 and 264,812.40

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Solution

The fourth proportional to 404,780.40, 605,615.40 and 264,812.40 is: 396,201.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,780.40 : 605,615.40 = 264,812.40 : x
  2. Step 2: Convert to fraction form
    404,780.40/605,615.40 = 264,812.40/x
  3. Step 3: Cross multiply
    404,780.40x = 605,615.40 × 264,812.40
  4. Step 4: Simplify right side
    404,780.40x = 160,374,467,550.96
  5. Step 5: Solve for x
    x = 160,374,467,550.96/404,780.40
  6. Step 6: Final answer
    x = 396,201.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.