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Finding the Fourth Proportional to 383,885.88, 529,763.40 and 214,131.12

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Solution

The fourth proportional to 383,885.88, 529,763.40 and 214,131.12 is: 295,501.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,885.88 : 529,763.40 = 214,131.12 : x
  2. Step 2: Convert to fraction form
    383,885.88/529,763.40 = 214,131.12/x
  3. Step 3: Cross multiply
    383,885.88x = 529,763.40 × 214,131.12
  4. Step 4: Simplify right side
    383,885.88x = 113,438,830,177.01
  5. Step 5: Solve for x
    x = 113,438,830,177.01/383,885.88
  6. Step 6: Final answer
    x = 295,501.44

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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.