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Finding the Fourth Proportional to 228,854.88, 343,235.40 and 86,651.10

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Solution

The fourth proportional to 228,854.88, 343,235.40 and 86,651.10 is: 129,958.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,854.88 : 343,235.40 = 86,651.10 : x
  2. Step 2: Convert to fraction form
    228,854.88/343,235.40 = 86,651.10/x
  3. Step 3: Cross multiply
    228,854.88x = 343,235.40 × 86,651.10
  4. Step 4: Simplify right side
    228,854.88x = 29,741,724,968.94
  5. Step 5: Solve for x
    x = 29,741,724,968.94/228,854.88
  6. Step 6: Final answer
    x = 129,958.88

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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.