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Finding the Fourth Proportional to 324,021.97, 486,115.02 and 99,393.89

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Solution

The fourth proportional to 324,021.97, 486,115.02 and 99,393.89 is: 149,116.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,021.97 : 486,115.02 = 99,393.89 : x
  2. Step 2: Convert to fraction form
    324,021.97/486,115.02 = 99,393.89/x
  3. Step 3: Cross multiply
    324,021.97x = 486,115.02 × 99,393.89
  4. Step 4: Simplify right side
    324,021.97x = 48,316,860,394.65
  5. Step 5: Solve for x
    x = 48,316,860,394.65/324,021.97
  6. Step 6: Final answer
    x = 149,116.00

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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.