Home / 152,638.11-228,968.09-40,317.20

Finding the Fourth Proportional to 152,638.11, 228,968.09 and 40,317.20

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Solution

The fourth proportional to 152,638.11, 228,968.09 and 40,317.20 is: 60,478.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,638.11 : 228,968.09 = 40,317.20 : x
  2. Step 2: Convert to fraction form
    152,638.11/228,968.09 = 40,317.20/x
  3. Step 3: Cross multiply
    152,638.11x = 228,968.09 × 40,317.20
  4. Step 4: Simplify right side
    152,638.11x = 9,231,351,504.14
  5. Step 5: Solve for x
    x = 9,231,351,504.14/152,638.11
  6. Step 6: Final answer
    x = 60,478.68

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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.