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Finding the Fourth Proportional to 252,992.40, 379,488.60 and 214,938.60

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Solution

The fourth proportional to 252,992.40, 379,488.60 and 214,938.60 is: 322,407.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,992.40 : 379,488.60 = 214,938.60 : x
  2. Step 2: Convert to fraction form
    252,992.40/379,488.60 = 214,938.60/x
  3. Step 3: Cross multiply
    252,992.40x = 379,488.60 × 214,938.60
  4. Step 4: Simplify right side
    252,992.40x = 81,566,748,399.96
  5. Step 5: Solve for x
    x = 81,566,748,399.96/252,992.40
  6. Step 6: Final answer
    x = 322,407.90

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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.