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Finding the Fourth Proportional to 231,860.60, 348,213.30 and 138,548.60

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Solution

The fourth proportional to 231,860.60, 348,213.30 and 138,548.60 is: 208,075.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,860.60 : 348,213.30 = 138,548.60 : x
  2. Step 2: Convert to fraction form
    231,860.60/348,213.30 = 138,548.60/x
  3. Step 3: Cross multiply
    231,860.60x = 348,213.30 × 138,548.60
  4. Step 4: Simplify right side
    231,860.60x = 48,244,465,216.38
  5. Step 5: Solve for x
    x = 48,244,465,216.38/231,860.60
  6. Step 6: Final answer
    x = 208,075.31

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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.