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Finding the Fourth Proportional to 339,268.40, 508,902.60 and 86,548.40

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Solution

The fourth proportional to 339,268.40, 508,902.60 and 86,548.40 is: 129,822.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,268.40 : 508,902.60 = 86,548.40 : x
  2. Step 2: Convert to fraction form
    339,268.40/508,902.60 = 86,548.40/x
  3. Step 3: Cross multiply
    339,268.40x = 508,902.60 × 86,548.40
  4. Step 4: Simplify right side
    339,268.40x = 44,044,705,785.84
  5. Step 5: Solve for x
    x = 44,044,705,785.84/339,268.40
  6. Step 6: Final answer
    x = 129,822.60

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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.