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Finding the Fourth Proportional to 383,118.66, 528,431.85 and 325,359.18

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Solution

The fourth proportional to 383,118.66, 528,431.85 and 325,359.18 is: 448,764.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,118.66 : 528,431.85 = 325,359.18 : x
  2. Step 2: Convert to fraction form
    383,118.66/528,431.85 = 325,359.18/x
  3. Step 3: Cross multiply
    383,118.66x = 528,431.85 × 325,359.18
  4. Step 4: Simplify right side
    383,118.66x = 171,930,153,401.88
  5. Step 5: Solve for x
    x = 171,930,153,401.88/383,118.66
  6. Step 6: Final answer
    x = 448,764.76

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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.