Home / 415,644.22-623,272.56-215,911

Finding the Fourth Proportional to 415,644.22, 623,272.56 and 215,911

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Solution

The fourth proportional to 415,644.22, 623,272.56 and 215,911 is: 323,765.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,644.22 : 623,272.56 = 215,911 : x
  2. Step 2: Convert to fraction form
    415,644.22/623,272.56 = 215,911/x
  3. Step 3: Cross multiply
    415,644.22x = 623,272.56 × 215,911
  4. Step 4: Simplify right side
    415,644.22x = 134,571,401,702.16
  5. Step 5: Solve for x
    x = 134,571,401,702.16/415,644.22
  6. Step 6: Final answer
    x = 323,765.84

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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.