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Finding the Fourth Proportional to 437,644.40, 656,466.60 and 215,999.60

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Solution

The fourth proportional to 437,644.40, 656,466.60 and 215,999.60 is: 323,999.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,644.40 : 656,466.60 = 215,999.60 : x
  2. Step 2: Convert to fraction form
    437,644.40/656,466.60 = 215,999.60/x
  3. Step 3: Cross multiply
    437,644.40x = 656,466.60 × 215,999.60
  4. Step 4: Simplify right side
    437,644.40x = 141,796,523,013.36
  5. Step 5: Solve for x
    x = 141,796,523,013.36/437,644.40
  6. Step 6: Final answer
    x = 323,999.40

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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.