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Finding the Fourth Proportional to 246,071, 339,480.78 and 155,393.12

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Solution

The fourth proportional to 246,071, 339,480.78 and 155,393.12 is: 214,381.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,071 : 339,480.78 = 155,393.12 : x
  2. Step 2: Convert to fraction form
    246,071/339,480.78 = 155,393.12/x
  3. Step 3: Cross multiply
    246,071x = 339,480.78 × 155,393.12
  4. Step 4: Simplify right side
    246,071x = 52,752,977,584.23
  5. Step 5: Solve for x
    x = 52,752,977,584.23/246,071
  6. Step 6: Final answer
    x = 214,381.12

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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.