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Finding the Fourth Proportional to 318,987.69, 440,212.98 and 183,046.50

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Solution

The fourth proportional to 318,987.69, 440,212.98 and 183,046.50 is: 252,609.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,987.69 : 440,212.98 = 183,046.50 : x
  2. Step 2: Convert to fraction form
    318,987.69/440,212.98 = 183,046.50/x
  3. Step 3: Cross multiply
    318,987.69x = 440,212.98 × 183,046.50
  4. Step 4: Simplify right side
    318,987.69x = 80,579,445,243.57
  5. Step 5: Solve for x
    x = 80,579,445,243.57/318,987.69
  6. Step 6: Final answer
    x = 252,609.89

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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.