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Finding the Fourth Proportional to 226,641.40, 339,962.10 and 212,644.60

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Solution

The fourth proportional to 226,641.40, 339,962.10 and 212,644.60 is: 318,966.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,641.40 : 339,962.10 = 212,644.60 : x
  2. Step 2: Convert to fraction form
    226,641.40/339,962.10 = 212,644.60/x
  3. Step 3: Cross multiply
    226,641.40x = 339,962.10 × 212,644.60
  4. Step 4: Simplify right side
    226,641.40x = 72,291,104,769.66
  5. Step 5: Solve for x
    x = 72,291,104,769.66/226,641.40
  6. Step 6: Final answer
    x = 318,966.90

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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.