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Finding the Fourth Proportional to 489,191.27, 675,090.65 and 295,571.90

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Solution

The fourth proportional to 489,191.27, 675,090.65 and 295,571.90 is: 407,893.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,191.27 : 675,090.65 = 295,571.90 : x
  2. Step 2: Convert to fraction form
    489,191.27/675,090.65 = 295,571.90/x
  3. Step 3: Cross multiply
    489,191.27x = 675,090.65 × 295,571.90
  4. Step 4: Simplify right side
    489,191.27x = 199,537,828,519.39
  5. Step 5: Solve for x
    x = 199,537,828,519.39/489,191.27
  6. Step 6: Final answer
    x = 407,893.28

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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.